// SPDX-License-Identifier: MIT
/*
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@  @@@@@@@@@@@@@@@@@@@@@@@@@@#%%%??%S###@@@@@@@@@@@@@#SS??#@@@@@@@@@@###@@@@@@@@@@@@@@@  @
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@  @@@@@@@@@@@@%+:+S@@@#:;%@@@@@@%;:@@:*S@@@@@@@@@%:*+;?S@@@@@S+;#@@@@@@+;@@@@@@@@@@@@@  @
@  @@@@@@@@@@#?;:%@@#%S@*:;;%SS#@S+:#@+*S@@@@@@@@@?,SS:+S####?:;#@@@@#@@#:*#@@@@@@@@@@@  @
@  @@@@@@@@@S?:,?@@@#%%%%:%S*+++*?;+@@;+@@S%???%S@#:?@#?;+;;;+?@@%+*#%@@@*:%@@@@@@@@@@@  @
@  @@@@@@@@@?+,+@@@@@S+:#%;?@@#S??S#S+:+*;;***++;*S*:?@@@S%##@@S*;?:?#%@@%:?@@@@@@@@@@@  @
@  @@@@@@@@@SS:%@@@@@#+;S@S+;?S%***+::;;+*S##@@#%?:+%*;*%SSS?+;+?@S:*#@@@S:?@@@@@@@@@@@  @
@  @@@@@@@@@S#:?@@@@@S%%:?@#?**??*+;+*?S@@@@@@@@@@S+:*%?????%%#@#S+:*@@@@S,?@@@@@@@@@@@  @
@  @@@@@@@@@@#:*@@@@@@SS+:%@@@%++*?%#@@@@@@@@@@@@@@@%;+*????##SS%+:+#@@@@#+*@@@@@@@@@@@  @
@  @@@@@@@@@@#;;#@@@@@@#%*:*S@?:%@#@@@@@@@@@@@@@@@@@@@#%+;::;++++*%@@@@@@S+;@@@@@@@@@@@  @
@  @@@@@@@@@@@%*;S@@@@@@@@#??*;:+?@@@@@@@@@@@@@@@@@@@@@@#S%%%#@@@@@@@#S@@+:S@@@@@@@@@@@  @
@  @@@@@@@@@@@@@%;+S#@@@@@@#SS%%%#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#S##%;;S@@@@@@@@@@@@  @
@  @@@@@@@@@@@@@@#+;;*%S#@@@@@@@@ CYBER VIKING WARRIORS @@@@@@@###S#S+;;*@@@@@@@@@@@@@@  @
@  @@@@@@@@@@@@@@@@#%*+++++*??%#@@@@@@@@@@@@@@@@@@@@@@@@@@SSSS%??%?+:*S#@@@@@@@@@@@@@@@  @
@  @@@@@@@@@@@@@@@@@@S%%?????;,:S@@@@@@@@@@@@@@@@@@@@@@@@%+:::;??*++*S#@#@@@@@@@@@@@@@@  @
@  @@@@@@@@@@@@@@@#*;;;*#S@@?;+:S@@#SSS#SS@@@@@@@@@@@@@@@*:*S?;*%?;*;+SS%@@@@@@@@@@@@@@  @
@  @@@@@@@@@@@@@@@%*:S%:;*++*%+:#S#+++;+*%%S@@@@#S%+;;+S@*,?#@@S?*;*+;SS%@@@@@@@@@@@@@@  @
@  @@@@@@@@@#@#SS#%+:+;;*%#@@%:;@%?,%#%*;;?SS@S%+;+*%?:+@?,*S#@@@@S%+:+S#S%#@@@@@@@@@@@  @
@  @@@@@@@@@%*;+%*++*%#@@@@@%*,?@#S:*S@@S?:*##*;*%S#@?:+@%;:S%@@@@#SS%+;++;+#@@@@@@@@@@  @
@  @@@@@@@@@S+:?;+%S#@@@@@@@%*,SS@@;;?@@@S%;;;;%@@@@@%,%@@S:+S#@@@@#%S@+:*#:?SS#@@@@@@@  @
@  @@@@@@@@SS*::*S#@@@@@@@@@#S*:*S@*:%S@@@S%*+SS@@@@%+,%@#+;%#@@@@@@@S##%:*:%SS@@@@@@@@  @
@  @@@@@@@S+*;;*#@@@@@@@@@@@@@S*:?#%,%%@@@@@@@@@@@@S?:;SS:+S?@@@@@@@@@SS@?::++*#@@@@@@@  @
@  @@@@@@#S+::+S@@@@@@@@@@@@@@@S*:S@;;#@@@@@@@@@@@@@+:S%:*@?#@@@@@@@@@@#S#*:?#:*@@@@@@@  @
@  @@@@@@S?%*:*@@@@@@@@@@@@@@@@@S;;%:+##@@@@@@@@@@@S%;+;;@?S@@@@@@@@@@@@@##;;?:SSSS@@@@  @
@  @@@@@@@SS+:S#@@@@@@@@@@@@@@@@#*:,*SS@@@@@@@@@@@@#SS;,%#S@@@@@@@@@@@@@@@@?:*%S%S@@@@@  @
@  @@@@@@%@#S+;?S#@@@@@@@@@@@@@@@@SS##@@@@@@@@@@@@@@@##S@S@@@@@@@@@@@@@####S+:@%#@@@@@@  @
@  @@@@@@#%@#S+;;;S?S#@@@%**+*#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@%#@@@@@#SSS%S#:*S%@@@@@@@  @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
*/

// File: @openzeppelin/contracts/utils/Strings.sol
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings 
{
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) 
    {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) 
        {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) 
        {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) 
        {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) 
    {
        if (value == 0) 
        {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) 
        {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) 
    {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) 
        {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// File: @openzeppelin/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context 
{
    function _msgSender() internal view virtual returns (address) 
    {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) 
    {
        return msg.data;
    }
}

// File: @openzeppelin/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address 
{
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) 
    {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal 
    {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) 
    {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall
    (
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) 
    {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue
    (
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) 
    {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue
    (
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) 
    {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) 
    {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall
    (
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) 
    {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) 
    {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall
    (
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) 
    {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult
    (
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) 
    {
        if (success) 
        {
            return returndata;
        } 
        else 
        {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) 
            {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly 
                {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } 
            else 
            {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver 
{
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received
    (
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 
{
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;


/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 
{
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) 
    {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

 /**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 
{
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom
    (
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom
    (
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom
    (
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 
{
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// File: contracts/new.sol

pragma solidity ^0.8.4;

error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerQueryForNonexistentToken();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
 *
 * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 *
 * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Compiler will pack this into a single 256bit word.
    struct TokenOwnership 
    {
        // The address of the owner.
        address addr;
        // Keeps track of the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
    }

    // Compiler will pack this into a single 256bit word.
    struct AddressData 
    {
        // Realistically, 2**64-1 is more than enough.
        uint64 balance;
        // Keeps track of mint count with minimal overhead for tokenomics.
        uint64 numberMinted;
        // Keeps track of burn count with minimal overhead for tokenomics.
        uint64 numberBurned;
        // For miscellaneous variable(s) pertaining to the address
        // (e.g. number of whitelist mint slots used).
        // If there are multiple variables, please pack them into a uint64.
        uint64 aux;
    }

    // The tokenId of the next token to be minted.
    uint256 internal _currentIndex;

    // The number of tokens burned.
    uint256 internal _burnCounter;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to ownership details
    // An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.
    mapping(uint256 => TokenOwnership) internal _ownerships;

    // Mapping owner address to address data
    mapping(address => AddressData) private _addressData;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    constructor(string memory name_, string memory symbol_) 
    {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    /**
     * To change the starting tokenId, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) 
    {
        return 1;
    }

    /**
     * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
     */
    function totalSupply() public view returns (uint256) 
    {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than _currentIndex - _startTokenId() times
        unchecked 
        {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

    /**
     * Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view returns (uint256) 
    {
        // Counter underflow is impossible as _currentIndex does not decrement,
        // and it is initialized to _startTokenId()
        unchecked 
        {
            return _currentIndex - _startTokenId();
        }
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) 
    {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) 
    {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return uint256(_addressData[owner].balance);
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) 
    {
        return uint256(_addressData[owner].numberMinted);
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) 
    {
        return uint256(_addressData[owner].numberBurned);
    }

    /**
     * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) 
    {
        return _addressData[owner].aux;
    }

    /**
     * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
     * If there are multiple variables, please pack them into a uint64.
     */
    function _setAux(address owner, uint64 aux) internal 
    {
        _addressData[owner].aux = aux;
    }

    /**
     * Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around in the collection over time.
     */
    function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) 
    {
        uint256 curr = tokenId;

        unchecked 
        {
            if (_startTokenId() <= curr && curr < _currentIndex) 
            {
                TokenOwnership memory ownership = _ownerships[curr];
                if (!ownership.burned) 
                {
                    if (ownership.addr != address(0)) 
                    {
                        return ownership;
                    }
                    // Invariant:
                    // There will always be an ownership that has an address and is not burned
                    // before an ownership that does not have an address and is not burned.
                    // Hence, curr will not underflow.
                    while (true) 
                    {
                        curr--;
                        ownership = _ownerships[curr];
                        if (ownership.addr != address(0)) 
                        {
                            return ownership;
                        }
                    }
                }
            }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) 
    {
        return _ownershipOf(tokenId).addr;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) 
    {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) 
    {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) 
    {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

        string memory baseURI = _baseURI();
        return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) 
    {
        return '';
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override 
    {
        address owner = ERC721A.ownerOf(tokenId);
        if (to == owner) revert ApprovalToCurrentOwner();

        if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) 
        {
            revert ApprovalCallerNotOwnerNorApproved();
        }

        _approve(to, tokenId, owner);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) 
    {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override 
    {
        if (operator == _msgSender()) revert ApproveToCaller();

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) 
    {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom
    (
        address from,
        address to,
        uint256 tokenId
    )
    public virtual override 
    {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom
    (
        address from,
        address to,
        uint256 tokenId
    ) public virtual override 
    {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom
    (
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override 
    {
        _transfer(from, to, tokenId);
        if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) 
        {
            revert TransferToNonERC721ReceiverImplementer();
        }
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) 
    {
        return _startTokenId() <= tokenId && tokenId < _currentIndex &&
            !_ownerships[tokenId].burned;
    }

    function _safeMint(address to, uint256 quantity) internal 
    {
        _safeMint(to, quantity, '');
    }

    /**
     * @dev Safely mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint
    (
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal 
    {
        _mint(to, quantity, _data, true);
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event.
     */
    function _mint
    (
        address to,
        uint256 quantity,
        bytes memory _data,
        bool safe
    ) internal 
    {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();

        _beforeTokenTransfers(address(0), to, startTokenId, quantity);

        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
        unchecked {
            _addressData[to].balance += uint64(quantity);
            _addressData[to].numberMinted += uint64(quantity);

            _ownerships[startTokenId].addr = to;
            _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);

            uint256 updatedIndex = startTokenId;
            uint256 end = updatedIndex + quantity;

            if (safe && to.isContract()) 
            {
                do 
                {
                    emit Transfer(address(0), to, updatedIndex);
                    if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) 
                    {
                        revert TransferToNonERC721ReceiverImplementer();
                    }
                } while (updatedIndex != end);
                // Reentrancy protection
                if (_currentIndex != startTokenId) revert();
            } else 
            {
                do 
                {
                    emit Transfer(address(0), to, updatedIndex++);
                } while (updatedIndex != end);
            }
            _currentIndex = updatedIndex;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer
    (
        address from,
        address to,
        uint256 tokenId
    ) private 
    {
        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

        if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();

        bool isApprovedOrOwner = (_msgSender() == from ||
            isApprovedForAll(from, _msgSender()) ||
            getApproved(tokenId) == _msgSender());

        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, from);

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
        unchecked 
        {
            _addressData[from].balance -= 1;
            _addressData[to].balance += 1;

            TokenOwnership storage currSlot = _ownerships[tokenId];
            currSlot.addr = to;
            currSlot.startTimestamp = uint64(block.timestamp);

            // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
            // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
            uint256 nextTokenId = tokenId + 1;
            TokenOwnership storage nextSlot = _ownerships[nextTokenId];
            if (nextSlot.addr == address(0)) 
            {
                // This will suffice for checking _exists(nextTokenId),
                // as a burned slot cannot contain the zero address.
                if (nextTokenId != _currentIndex) 
                {
                    nextSlot.addr = from;
                    nextSlot.startTimestamp = prevOwnership.startTimestamp;
                }
            }
        }

        emit Transfer(from, to, tokenId);
        _afterTokenTransfers(from, to, tokenId, 1);
    }

    /**
     * @dev This is equivalent to _burn(tokenId, false)
     */
    function _burn(uint256 tokenId) internal virtual 
    {
        _burn(tokenId, false);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId, bool approvalCheck) internal virtual
    {
        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

        address from = prevOwnership.addr;

        if (approvalCheck) 
        {
            bool isApprovedOrOwner = (_msgSender() == from ||
                isApprovedForAll(from, _msgSender()) ||
                getApproved(tokenId) == _msgSender());

            if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, from);

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
        unchecked 
        {
            AddressData storage addressData = _addressData[from];
            addressData.balance -= 1;
            addressData.numberBurned += 1;

            // Keep track of who burned the token, and the timestamp of burning.
            TokenOwnership storage currSlot = _ownerships[tokenId];
            currSlot.addr = from;
            currSlot.startTimestamp = uint64(block.timestamp);
            currSlot.burned = true;

            // If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
            // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
            uint256 nextTokenId = tokenId + 1;
            TokenOwnership storage nextSlot = _ownerships[nextTokenId];
            if (nextSlot.addr == address(0)) 
            {
                // This will suffice for checking _exists(nextTokenId),
                // as a burned slot cannot contain the zero address.
                if (nextTokenId != _currentIndex) 
                {
                    nextSlot.addr = from;
                    nextSlot.startTimestamp = prevOwnership.startTimestamp;
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked 
        {
            _burnCounter++;
        }
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve
    (
        address to,
        uint256 tokenId,
        address owner
    ) private 
    {
        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkContractOnERC721Received
    (
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) 
    {
        try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) 
        {
            return retval == IERC721Receiver(to).onERC721Received.selector;
        } catch (bytes memory reason) 
        {
            if (reason.length == 0) 
            {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly 
                {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     * And also called before burning one token.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _beforeTokenTransfers
    (
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
     * minting.
     * And also called after one token has been burned.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
     * transferred to `to`.
     * - When `from` is zero, `tokenId` has been minted for `to`.
     * - When `to` is zero, `tokenId` has been burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers
    (
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}
}

abstract contract Ownable is Context 
{
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() 
    {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) 
    {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() 
    {
        require(owner() == _msgSender() , "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner 
    {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner 
    {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual 
    {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
    pragma solidity ^0.8.7;
    
    contract CyberVikingWarriors is ERC721A, Ownable 
{
    using Strings for uint256;


    string private uriPrefix ;
    string private uriSuffix = ".json";
    string public hiddenURL = "ipfs://QmNWeHLZBgN9GbbHp1BSjHdssRMBC3GTNxRSHxAEAsbAVK/Metadata_pre_reveal_image.json";


  uint256 public cost = 0.04 ether;
  uint public priceIncrement = 0.02 ether;
 

  uint16 public constant maxSupply = 6666;
  uint8 public maxMintAmountPerWallet = 20;

  uint8 public priceFloor = 1;
  uint16 public priceFloorCounter;


  uint16 public maxLimitFor2ndFloor = 1000; 
  uint16 public maxLimitFor3rdFloor = 1000;
  uint16 public maxLimitFor4thFloor = 1000;
  uint16 public maxLimitFor5thFloor = 1000;
  uint16 public maxLimitFor6thFloor = 1000;
  uint16 public maxLimitFor7thFloor = 666;
                                                             
  uint16 public currentMaxLimit = 1000;
  bool public paused = true;
  bool public reveal =false;


  mapping (address => uint8) public NFTPerAddress;

  address public admin1 = 0x0121C2AA846E0852340F8e06ebb440FA82b0bCbB;
  address public admin2 = 0x8B47F2f7403Eed076d2F3A8f05f8e6b22325199B;
  address public admin3 = 0x5BcbccE1c34589c4B01E40764e8e52aC97da8A8B;
  address public admin4 = 0x84881Cb839ebd530217ca130aEEa43768D6eD910;
  address public admin5 = 0x518D0C749E8d5145d563ed783c5b2AC4d3930172;
  address public admin6 = 0x38D609C9f9A4fCC8c1F584D49D605683e5FCD41c;
  
  
  

  constructor() ERC721A("Cyber Viking Warriors", "CVW") 
  {

  }

    modifier onlyAdmins() 
    {
        require(admin1 == msg.sender ||  admin2 == msg.sender ||  admin3 == msg.sender ||  admin4 == msg.sender ||  admin5 == msg.sender ||  admin6 == msg.sender, "Ownable: caller is not the owner");
        _;
    }
 
  function mint(uint16 _mintAmount) external payable  
  {
     uint16 totalSupply = uint16(totalSupply());
    require(totalSupply + _mintAmount <= maxSupply, "Exceeds max supply.");
    uint8 Nft = NFTPerAddress[msg.sender] ;
    require(Nft + _mintAmount <= maxMintAmountPerWallet, "You have exceeded the maximum NFT per wallet.");

    require(!paused, "The contract is paused!");
    uint16 _counter = priceFloorCounter + _mintAmount;
    if(_counter  <= currentMaxLimit)
    {
    require(msg.value >= cost * _mintAmount, "Insufficient funds!");
    priceFloorCounter = _counter;
    }
    else
    {
       uint16 overAmount = _counter - currentMaxLimit;
       uint16 AmountInLimit= _mintAmount - overAmount;
       uint costIncrement = cost + priceIncrement;
       uint totalCost = (cost * AmountInLimit) + (costIncrement * overAmount);
         require(msg.value >= totalCost, "Insufficient funds!");
         cost = costIncrement;
         priceFloorCounter = overAmount; 
          priceFloor++;
        if(priceFloor == 2)
        {
            currentMaxLimit = maxLimitFor2ndFloor;
        }
        else if (priceFloor == 3)
        {
            currentMaxLimit = maxLimitFor3rdFloor;
        }
        else if (priceFloor == 4)
        {
            currentMaxLimit = maxLimitFor4thFloor;
        }
        else if (priceFloor == 5)
        {
            currentMaxLimit = maxLimitFor5thFloor;
        }
        else if (priceFloor == 6)
        {
            currentMaxLimit = maxLimitFor6thFloor;
        }
        else if (priceFloor == 7)
        {
            currentMaxLimit = maxLimitFor7thFloor;
        }
    }
    _safeMint(msg.sender , _mintAmount);
     NFTPerAddress[msg.sender] = Nft + uint8(_mintAmount);
     
     delete totalSupply;
     delete _mintAmount;
  }
  
  function Reserve(uint16 _mintAmount, address _receiver) external onlyAdmins {
     uint16 totalSupply = uint16(totalSupply());
    require(totalSupply + _mintAmount <= maxSupply, "Exceeds max supply.");
     _safeMint(_receiver , _mintAmount);
      uint16 _counter = priceFloorCounter + _mintAmount;
    if(_counter  <= currentMaxLimit)
    {
        priceFloorCounter = _counter;
    }
    else
    {
       uint16 overAmount = _counter - currentMaxLimit;
       uint costIncrement = cost + priceIncrement;
        cost = costIncrement;
        priceFloorCounter = overAmount; 
        priceFloor++;
        if(priceFloor == 2)
        {
        currentMaxLimit = maxLimitFor2ndFloor;
        }
        else if (priceFloor == 3)
        {
        currentMaxLimit = maxLimitFor3rdFloor;
        }
        else if (priceFloor == 4)
        {
        currentMaxLimit = maxLimitFor4thFloor;
        }
        else if (priceFloor == 5)
        {
        currentMaxLimit = maxLimitFor5thFloor;
        }
        else if (priceFloor == 6)
        {
            currentMaxLimit = maxLimitFor6thFloor;
        }
        else if (priceFloor == 7)
        {
            currentMaxLimit = maxLimitFor7thFloor;
        }
    }
     delete _mintAmount;
     delete _receiver;
     delete totalSupply;
  }
    function Airdrop(uint16 _mintAmount, address _receiver) external onlyAdmins {
     uint16 totalSupply = uint16(totalSupply());
    require(totalSupply + _mintAmount <= maxSupply, "Exceeds max supply.");
     _safeMint(_receiver , _mintAmount);
      uint16 _counter = priceFloorCounter + _mintAmount;
    if(_counter  <= currentMaxLimit)
    {
        priceFloorCounter = _counter;
    }
    else
    {
       uint16 overAmount = _counter - currentMaxLimit;
       uint costIncrement = cost + priceIncrement;
         cost = costIncrement;
         priceFloorCounter = overAmount; 
          priceFloor++;

        if(priceFloor == 2)
        {
            currentMaxLimit = maxLimitFor2ndFloor;
        }
        else if (priceFloor == 3)
        {
            currentMaxLimit = maxLimitFor3rdFloor;
        }
        else if (priceFloor == 4)
        {
            currentMaxLimit = maxLimitFor4thFloor;
        }
        else if (priceFloor == 5)
        {
            currentMaxLimit = maxLimitFor5thFloor;
        }
        else if (priceFloor == 6)
        {
            currentMaxLimit = maxLimitFor6thFloor;
        }
        else if (priceFloor == 7)
        {
            currentMaxLimit = maxLimitFor7thFloor;
        }
    }
     delete _mintAmount;
     delete _receiver;
     delete totalSupply;
  }

  function tokenURI(uint256 _tokenId)
    public
    view
    virtual
    override
    returns (string memory)
  {
    require(
      _exists(_tokenId),
      "ERC721Metadata: URI query for nonexistent token"
    );
  
    if ( reveal == false)
    {
    return hiddenURL;
    }
    

    string memory currentBaseURI = _baseURI();
    return bytes(currentBaseURI).length > 0
        ? string(abi.encodePacked(currentBaseURI, _tokenId.toString() ,uriSuffix))
        : "";
  }
 

  function setUriPrefix(string memory _uriPrefix) external onlyAdmins 
  {
    uriPrefix = _uriPrefix;
  }

  function setHiddenUri(string memory _uriPrefix) external onlyAdmins 
  {
    hiddenURL = _uriPrefix;
  }

  function setPaused() external onlyAdmins
  {
    paused = !paused;
  }

  function setCost(uint _cost) external onlyAdmins
  {
      cost = _cost;
  }

  function setRevealed() external onlyAdmins
  {
      reveal = !reveal;
  }

  function setMaxMintAmountPerWallet(uint8 _maxtx) external onlyAdmins
  {
      maxMintAmountPerWallet = _maxtx;
  }

  function withdraw() external onlyAdmins 
  {
  uint _balance = address(this).balance;
	payable(0x0121C2AA846E0852340F8e06ebb440FA82b0bCbB).transfer(_balance * 25 / 100); 
    payable(0x8B47F2f7403Eed076d2F3A8f05f8e6b22325199B).transfer(_balance * 15 / 100); 
    payable(0x5BcbccE1c34589c4B01E40764e8e52aC97da8A8B).transfer(_balance * 15 / 100); 
    payable(0x84881Cb839ebd530217ca130aEEa43768D6eD910).transfer(_balance * 15 / 100); 
    payable(0x518D0C749E8d5145d563ed783c5b2AC4d3930172).transfer(_balance * 15 / 100);
    payable(0x38D609C9f9A4fCC8c1F584D49D605683e5FCD41c).transfer(_balance * 15 / 100);
  }

  function _baseURI() internal view  override returns (string memory) 
  {
    return uriPrefix;
  }
}