// SPDX-License-Identifier: MIT

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//  .____     ___________ ___________________ _______  ________    _________
//  |    |    \_   _____//  _____/\_   _____/ \      \ \______ \  /   _____/
//  |    |     |    __)_/   \  ___ |    __)_  /   |   \ |    |  \ \_____  \ 
//  |    |___  |        \    \_\  \|        \/    |    \|    `   \/        \
//  |_______ \/_______  /\______  /_______  /\____|__  /_______  /_______  /
//          \/        \/        \/        \/         \/        \/        \/ 


//  ________  ___________   __________ ________ __________  _______  ___________
//  \_____  \ \_   _____/   \______   \\_____  \\______   \ \      \ \_   _____/
//   /   |   \ |    __)      |    |  _/ /   |   \|       _/ /   |   \ |    __)_ 
//  /    |    \|     \       |    |   \/    |    \    |   \/    |    \|        \
//  \_______  /\___  /       |______  /\_______  /____|_  /\____|__  /_______  /
//          \/     \/               \/         \/       \/         \/        \/ 


// File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol
// OpenZeppelin Contracts (last updated v4.6.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = _efficientHash(computedHash, proofElement);
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = _efficientHash(proofElement, computedHash);
            }
        }
        return computedHash;
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// 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

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// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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/access/Ownable.sol


// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;


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");
        _;
    }

      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);
    }
}

// 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 {
      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;
    }

      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");
    }

      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);
    }

    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");
    }

     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);
    }

      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 (last updated v4.6.0) (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 `IERC721Receiver.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;


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 (last updated v4.6.0) (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`.
     *
     * 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;

    /**
     * @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 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 the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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);
}

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol


// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;


/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// 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/finalcontract.sol


pragma solidity ^0.8.0;










error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error UnableDetermineTokenOwner();
error URIQueryForNonexistentToken();

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
 *
 * Does not support burning tokens to address(0).
 *
 * Assumes that an owner cannot have more than the 2**128 - 1 (max value of uint128) of supply
 */
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
    using Address for address;
    using Strings for uint256;

    struct TokenOwnership {
        address addr;
        uint64 startTimestamp;
    }

    struct AddressData {
        uint128 balance;
        uint128 numberMinted;
    }

    uint256 internal _currentIndex;

    // 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_;
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return _currentIndex;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view override returns (uint256) {
        if (index >= totalSupply()) revert TokenIndexOutOfBounds();
        return index;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     * This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
     * It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
        if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
        uint256 numMintedSoFar = totalSupply();
        uint256 tokenIdsIdx;
        address currOwnershipAddr;

        // Counter overflow is impossible as the loop breaks when uint256 i is equal to another uint256 numMintedSoFar.
        unchecked {
            for (uint256 i; i < numMintedSoFar; i++) {
                TokenOwnership memory ownership = _ownerships[i];
                if (ownership.addr != address(0)) {
                    currOwnershipAddr = ownership.addr;
                }
                if (currOwnershipAddr == owner) {
                    if (tokenIdsIdx == index) {
                        return i;
                    }
                    tokenIdsIdx++;
                }
            }
        }

        // Execution should never reach this point.
        assert(false);
        return tokenIdsIdx;
    }

    /**
     * @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 ||
            interfaceId == type(IERC721Enumerable).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);
    }

    function _numberMinted(address owner) internal view returns (uint256) {
        if (owner == address(0)) revert MintedQueryForZeroAddress();
        return uint256(_addressData[owner].numberMinted);
    }

    /**
     * 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) {
        if (!_exists(tokenId)) revert OwnerQueryForNonexistentToken();

        unchecked {
            for (uint256 curr = tokenId; curr >= 0; curr--) {
                TokenOwnership memory ownership = _ownerships[curr];
                if (ownership.addr != address(0)) {
                    return ownership;
                }
            }
        }

        revert UnableDetermineTokenOwner();
    }

    /**
     * @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 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 override {
        _transfer(from, to, tokenId);
        if (!_checkOnERC721Received(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 tokenId < _currentIndex;
    }

    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 > 3.4e38 (2**128) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.56e77 (2**256) - 1
        unchecked {
            _addressData[to].balance += uint128(quantity);
            _addressData[to].numberMinted += uint128(quantity);

            _ownerships[startTokenId].addr = to;
            _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);

            uint256 updatedIndex = startTokenId;

            for (uint256 i; i < quantity; i++) {
                emit Transfer(address(0), to, updatedIndex);
                if (safe && !_checkOnERC721Received(address(0), to, updatedIndex, _data)) {
                    revert TransferToNonERC721ReceiverImplementer();
                }

                updatedIndex++;
            }

            _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);

        bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
            getApproved(tokenId) == _msgSender() ||
            isApprovedForAll(prevOwnership.addr, _msgSender()));

        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, prevOwnership.addr);

        // 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;

            _ownerships[tokenId].addr = to;
            _ownerships[tokenId].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;
            if (_ownerships[nextTokenId].addr == address(0)) {
                if (_exists(nextTokenId)) {
                    _ownerships[nextTokenId].addr = prevOwnership.addr;
                    _ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
                }
            }
        }

        emit Transfer(from, to, tokenId);
        _afterTokenTransfers(from, to, tokenId, 1);
    }

    /**
     * @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 address.
     * The call is not executed if the target address is not a 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 _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            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))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     *
     * 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`.
     */
    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.
     *
     * 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` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}
}



contract LEGEND is ERC721A, Ownable{
    using Strings for uint256;
    uint256 public constant MAX_SUPPLY = 11111;
    uint256 public constant MAX_PUBLIC_MINT = 5;
    uint256 public constant MAX_WHITELIST_MINT = 5;
    uint256 public PUBLIC_SALE_PRICE = .00 ether;
    uint256 public WHITELIST_SALE_PRICE = .00 ether;

    string private  baseTokenUri;
    string public   placeholderTokenUri;

    //deploy smart contract, toggle WL, toggle WL when done, toggle publicSale 
    //2 days later toggle reveal
    bool public isRevealed;
    bool public publicSale;
    bool public whiteListSale;
    bool public pause;
    bool public teamMinted;

    bytes32 private merkleRoot;

    mapping(address => uint256) public totalPublicMint;
    mapping(address => uint256) public totalWhitelistMint;

    constructor() ERC721A("LEGENDS OF BORNE", "LOB"){

    }

    modifier callerIsUser() {
        require(tx.origin == msg.sender, "LEGENDS :: Cannot be called by a contract");
        _;
    }

    function mint(uint256 _quantity) external payable callerIsUser{
        require(publicSale, "LEGENDS :: Not Yet Active.");
        require((totalSupply() + _quantity) <= MAX_SUPPLY, "LEGENDS :: Beyond Max Supply");
        require((totalPublicMint[msg.sender] +_quantity) <= MAX_PUBLIC_MINT, "LEGENDS :: Already minted 3 times!");
        require(msg.value >= (PUBLIC_SALE_PRICE * _quantity), "LEGENDS :: Below ");

        totalPublicMint[msg.sender] += _quantity;
        _safeMint(msg.sender, _quantity);
    }

    function whitelistMint(bytes32[] memory _merkleProof, uint256 _quantity) external payable callerIsUser{
        require(whiteListSale, "LEGENDS :: Minting is on Pause");
        require((totalSupply() + _quantity) <= MAX_SUPPLY, "LEGENDS :: Cannot mint beyond max supply");
        require((totalWhitelistMint[msg.sender] + _quantity)  <= MAX_WHITELIST_MINT, "LEGENDS :: Cannot mint beyond whitelist max mint!");
        require(msg.value >= (WHITELIST_SALE_PRICE * _quantity), "LEGENDS :: Payment is below the price");
        //create leaf node
        bytes32 sender = keccak256(abi.encodePacked(msg.sender));
        require(MerkleProof.verify(_merkleProof, merkleRoot, sender), "LEGENDS :: You are not whitelisted");

        totalWhitelistMint[msg.sender] += _quantity;
        _safeMint(msg.sender, _quantity);
    }

    function teamMint() external onlyOwner{
        require(!teamMinted, "LEGENDS :: Team already minted");
        teamMinted = true;
        _safeMint(msg.sender, 10);
    }

    function _baseURI() internal view virtual override returns (string memory) {
        return baseTokenUri;
    }

    //return uri for certain token
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        uint256 trueId = tokenId + 1;

        if(!isRevealed){
            return placeholderTokenUri;
        }
        //string memory baseURI = _baseURI();
        return bytes(baseTokenUri).length > 0 ? string(abi.encodePacked(baseTokenUri, trueId.toString(), ".json")) : "";
    }

    /// @dev walletOf() function shouldn't be called on-chain due to gas consumption
    function walletOf() external view returns(uint256[] memory){
        address _owner = msg.sender;
        uint256 numberOfOwnedNFT = balanceOf(_owner);
        uint256[] memory ownerIds = new uint256[](numberOfOwnedNFT);

        for(uint256 index = 0; index < numberOfOwnedNFT; index++){
            ownerIds[index] = tokenOfOwnerByIndex(_owner, index);
        }

        return ownerIds;
    }

    function setTokenUri(string memory _baseTokenUri) external onlyOwner{
        baseTokenUri = _baseTokenUri;
    }
    function setPlaceHolderUri(string memory _placeholderTokenUri) external onlyOwner{
        placeholderTokenUri = _placeholderTokenUri;
    }

    function setMerkleRoot(bytes32 _merkleRoot) external onlyOwner{
        merkleRoot = _merkleRoot;
    }

    function getMerkleRoot() external view returns (bytes32){
        return merkleRoot;
    }

    function togglePause() external onlyOwner{
        pause = !pause;
    }

    function toggleWhiteListSale() external onlyOwner{
        whiteListSale = !whiteListSale;
    }

    function togglePublicSale() external onlyOwner{
        publicSale = !publicSale;
    }

     function update_public_price(uint price) external onlyOwner {
        PUBLIC_SALE_PRICE = price;
    }
       function update_preSale_price(uint price) external onlyOwner {
        WHITELIST_SALE_PRICE = price;
    }

function AirDrop(address[] memory _wallets, uint _count) public onlyOwner{
        require(_wallets.length > 0, "mint at least one token");
        require(totalSupply() + _wallets.length <= MAX_SUPPLY, "not enough tokens left");
        for (uint i = 0; i < _wallets.length; i++)
        {
            _safeMint(_wallets[i], _count);
        }
    }

    function toggleReveal() external onlyOwner{
        isRevealed = !isRevealed;
    }

    function withdraw() external onlyOwner{
uint _balance = address(this).balance;
        payable(owner()).transfer(_balance );//owner
}
}


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//                             ▓▓                                              ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                      
//                                                                             ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                  
//                               ▓▓  ▓▓                                        ▓▓▓▓▓▓▓▓▓▓        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░              
//                             ▓▓▓▓  ▓▓▓▓            ░░▓▓▒▒                    ▓▓▓▓▓▓▓▓▓▓▓▓      ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓              
//                               ▓▓  ▓▓    ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░      ██▓▓▓▓▓▓▓▓▓▓▓▓▓▓          ▓▓▓▓▓▓▓▓▓▓▓▓            
//                               ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓        ██▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓██          ▓▓▓▓▓▓▓▓▓▓▓▓          
//                             ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒  ▓▓▓▓▓▓▓▓▒▒▒▒▓▓▓▓▓▓▓▓          ▒▒▓▓▓▓▓▓▓▓▓▓        
//                           ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░░░▓▓▓▓▒▒▓▓▓▓▓▓▓▓▒▒  ▓▓▓▓▓▓▓▓▒▒  ▒▒▒▒▓▓▓▓▒▒          ░░▓▓▓▓▓▓▓▓▒▒      
//                       ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓      ░░▒▒            ██▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓        ▓▓▓▓▓▓          ░░▓▓▓▓▓▓▓▓▓▓    
//                     ██▓▓▓▓▓▓  ▓▓▓▓▓▓▓▓▓▓          ░░            ██▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓        ▓▓▓▓▓▓          ▓▓▓▓▓▓▓▓▓▓    
//                 ░░▒▒▓▓▓▓░░  ▓▓▓▓▓▓▓▓▓▓▓▓                        ░░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓        ▒▒▓▓▓▓          ░░▓▓▓▓▓▓▓▓    
//                 ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░                            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒        ░░▓▓▒▒          ▓▓▓▓▓▓▓▓▒▒  
//               ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░  ██                        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓          ░░▓▓          ░░▓▓▓▓▓▓▓▓  
//       ▒▒▓▓▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓░░                        ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓            ▓▓░░          ▓▓▓▓▓▓▓▓  
//       ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                          ▓▓▓▓▓▓▓▓▓▓▓▓▓▓  ▓▓▓▓              ▒▒            ▓▓▓▓▓▓▓▓
//       ▓▓▓▓▓▓▓▓▓▓▓▓  ██  ██    ▓▓▓▓▓▓▓▓▓▓                            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓  ▓▓▓▓              ▓▓▓▓          ▓▓▓▓▓▓▓▓
//       ░░▓▓▓▓▓▓░░▓▓    ▓▓    ░░▓▓▓▓░░                            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  ░░▓▓              ▒▒▓▓          ▓▓▓▓▓▓▓▓
//         ░░▓▓░░      ▓▓░░    ▓▓▓▓                              ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    ▓▓              ░░▓▓          ░░▓▓▓▓▓▓
//             ██  ░░▓▓    ██  ▓▓▒▒  ██                        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓    ▓▓              ░░▓▓            ▓▓▓▓▓▓
//             ░░  ░░▓▓    ▒▒▒▒▓▓▒▒▒▒▒▒                      ▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  ▓▓    ▓▓              ░░▓▓            ▓▓▓▓▓▓
//                 ▓▓▓▓    ▓▓▓▓▓▓▓▓▓▓▓▓                  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░  ░░    ▓▓              ░░▓▓            ▓▓▓▓▓▓
//             ██  ▓▓      ▓▓▓▓▓▓▓▓▓▓▓▓▓▓            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓  ▓▓▓▓░░▓▓▓▓                          ░░▓▓            ▓▓▓▓▓▓
//           ▓▓    ▒▒        ▓▓▓▓                ██▓▓▓▓▓▓▓▓▓▓▓▓      ▓▓                                  ░░██            ▓▓▓▓▓▓
//         ▒▒▓▓  ▒▒▓▓        ░░░░            ▒▒▒▒▓▓▓▓▓▓▓▓▓▓██░░      ░░                                    ░░            ▓▓▓▓▓▓
//         ▓▓▒▒  ▓▓                      ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                                              ▓▓▓▓░░
//       ▒▒▒▒  ▒▒▓▓                    ▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒                                                              ▓▓▓▓  
//       ░░  ▒▒▓▓░░                  ▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░                                                            ░░▒▒▓▓▓▓  
//       ▓▓  ▓▓░░                  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                                                ▓▓▓▓░░  
//       ▓▓                        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                ▓▓                                ▓▓▓▓    
//                               ██▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                ░░██                            ▓▓▓▓▓▓    
//                             ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                  ▓▓                            ▓▓▓▓░░    
//                             ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                  ▓▓▓▓                          ▓▓▓▓      
//                             ██  ▓▓▓▓▓▓    ░░▓▓▓▓██▓▓                                ▓▓▓▓                        ▓▓▓▓▓▓      
//                             ▓▓  ▓▓▓▓░░      ▓▓▓▓▓▓▒▒                                ▓▓▓▓                        ▓▓▓▓▒▒      
//                             ░░  ▓▓▓▓    ░░▓▓▓▓▓▓▓▓▓▓▓▓                              ▓▓▓▓                        ▓▓░░        
//                                 ▓▓▓▓▒▒  ░░▓▓▓▓▓▓▓▓▓▓▓▓▒▒                            ▓▓▓▓▒▒                    ▒▒▓▓          
//                                 ░░▓▓▓▓    ▓▓▓▓▓▓▓▓▓▓▓▓▓▓                          ▒▒▓▓▓▓▒▒                    ▓▓▓▓          
//                                   ▓▓▓▓    ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                      ▓▓▓▓▓▓▒▒                    ▓▓            
//                                     ▓▓▓▓    ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                  ▓▓▓▓▓▓▓▓▓▓                    ▓▓            
//                                     ▓▓▓▓▓▓    ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓██░░          ▓▓▓▓▓▓▓▓▓▓                    ▓▓▓▓            
//                                       ▓▓▓▓▒▒    ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    ▓▓▓▓▓▓▓▓▓▓▓▓▓▓                    ▓▓▓▓            
//                                       ░░▓▓▓▓▓▓    ░░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░                    ░░▓▓            
//                                         ░░▓▓▓▓▓▓          ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                          ▓▓            
//                                           ░░▓▓▓▓▓▓▒▒            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                            ▓▓            
//                                             ░░░░▓▓▓▓▓▓        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░░░                            ▓▓            
//                                                 ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░                                                  
//                                                   ▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓              ▓▓▓▓▓▓                                      
//                                                 ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▓▓░░░░                                      
//                                           ░░▓▓▓▓▓▓▓▓▓▓░░░░      ▓▓▓▓▓▓▓▓▓▓▓▓  ░░░░                                          
//                                         ░░▓▓▓▓▓▓▓▓                  ░░                                                      
//                                         ▓▓▓▓▓▓░░░░                                                                          
//                                       ▓▓▓▓▓▓░░                                                                              
//                                       ▓▓▓▓        ░░▓▓▓▓██▓▓                                                                
//                                       ▓▓▓▓          ▓▓▓▓▓▓▓▓▒▒▒▒▒▒                                                          
//                                       ▓▓▓▓            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                                      
//                                       ▓▓▒▒            ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                                    
//                                       ░░▓▓▓▓▒▒▒▒▒▒▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒  ▓▓▓▓▓▓▒▒                                                
//                                         ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    ▓▓▓▓░░  ▓▓▓▓▓▓                                                
//                                           ░░▓▓▓▓▓▓▓▓██▓▓          ▓▓  ▓▓▓▓▓▓▓▓                                              
//                                         ▓▓    ░░▓▓▒▒                ▓▓  ▓▓▓▓▓▓                                              
//                                         ▒▒▒▒▓▓  ░░░░                ░░▒▒░░▓▓▓▓▒▒                                            
//                                           ▒▒▓▓▓▓▓▓                    ▓▓  ▓▓▓▓▓▓                ░░░░                        
//                                             ░░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓      ░░  ░░▓▓▓▓              ░░    ░░                      
//                                                 ░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓        ▓▓▓▓              ░░░░  ▒▒  ░░░░▒▒░░            
//                                                   ░░░░░░░░░░░░▓▓▓▓▓▓▓▓      ▓▓▓▓                ░░▒▒░░▒▒▒▒░░                
//                                                                 ▓▓▓▓▓▓      ▓▓▓▓                                            
//                                                                 ▓▓▓▓▓▓▓▓    ▓▓▓▓                                            
//                                                                 ▓▓▓▓▓▓▓▓    ▓▓▓▓                                            
//                                                                 ▓▓▓▓▓▓▓▓    ▓▓▓▓                                            
//                                                                 ▓▓▓▓▓▓▓▓    ▓▓▓▓                                            
//                                                                 ▓▓▓▓▓▓▓▓▒▒▒▒▓▓░░                                            
//                                                                 ▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                              
//                                                                 ▓▓▓▓▓▓▓▓▓▓▓▓▓▓                                              
//                                                               ▓▓▓▓▓▓▓▓  ▓▓▓▓░░                                              
//                                   ██▓▓▓▓▓▓▓▓▓▓▓▓              ▓▓▓▓▓▓▓▓  ▓▓░░                                                
//                                 ██▓▓          ▓▓▓▓            ▓▓▓▓▓▓░░                                                      
//                                 ▓▓░░          ▒▒▓▓          ▒▒▓▓▓▓▓▓                                                        
//                               ▓▓▒▒            ░░▓▓          ▓▓▓▓▓▓▓▓                                                        
//                               ▓▓              ▒▒▓▓        ▒▒▓▓▓▓▒▒░░                                                        
//                               ▓▓            ▒▒▓▓░░      ▒▒▓▓▓▓▓▓                                                            
//                             ▓▓▓▓      ▓▓▒▒▓▓▓▓░░        ▓▓▓▓▓▓░░                                                            
//                             ▓▓▓▓      ░░▓▓▓▓▓▓        ▓▓▓▓▓▓                                                                
//                             ▓▓▓▓                  ▓▓▓▓▓▓██                                                                  
//                               ▓▓▓▓              ▓▓▓▓▓▓▓▓                                                                    
//                               ░░▓▓▓▓▓▓    ▓▓▓▓▓▓▓▓▓▓▓▓