// File: contracts/DREAM.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: Dream Gallery
/// @author: manifold.xyz

import "./ERC721Creator.sol";

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                                                                                                          //
//                                                                                                                                                                                                                          //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMK:.cKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO:,xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXd,c0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXc.cKMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMWNKOkxxxdxkOKXXNWMMMMMMMMMMMMMNd'cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMNx,.....   ...'';cdk0NMMMMMMMMWx,lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMWO:. 'dkdlc;,'.'.....,cd0XWMWXk;cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMNOd0WMMMWWNXXXXK0Oxoc,',:odc':0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWX0xc,..,xXWMMMMMMMMMMMWX00KNMMMMMMMMMMMMMWWNXKOxod0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWXOo:';xNMMMMMMMMMXd,...;d0XWWMWNXK0xoc:,'.  .:OWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNKOkxkxl;lKWMMMMMMNo. 'cc;,',;loolllclodo, .;d0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWNNNNNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMWKOxoc:'...,;:;.:KMMMMMW0; .kWWWX0kdlc:;;:lxOK0c.'xNMMMMMMMMMMMMMMMMMMMMMMWNXXKOxlc:;;::lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMWXOdlc:;cldk00KKXK0o..lNMMMMNo..cKMMMMMMMMWWXK0kdol:.  .;d0NWMMMMMMMMMMMMMMWXOxl,''...  ..',,,,xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMN0kdollodOKNWWMMMMMMMMMNo..cKWMM0,'dXMMMMMMMMMMMMMMMMWNX0xl;. .'ckKNMMMMMMMWKkdc'...  ...;lc,'..',.:KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMWKxl;,lx0NWMMMMMMMMMMMMMMMMMXdc':OWXl,kWMMMMMMMMMMMMMMMMMMMMMMMW0o'  ':clxOKX0xc,. ....;cdxkKNWWKkl;'...dWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMN0o;...,kNMMMMMMMMMMMMMMMMMMMMMMMWk''do.:XMMMMMMMMMMMMMMMMMMMMMMMMMMW0:.;dkdl,.'....';:ok0XWMMMMMMMMMWNKx:.,xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMWXx:.  .,dKWMMMMMMMMMMMMMMMMMMMMMMMMMNd....;0MMMMMMMMMMMMMMMMMMMMMMMMMMMWX0xdxo,..,cldkKNWMMMMMMMMMMMMMMMMMMNKo,;xXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMNx,.  .;o0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMXc  .l0WMMMMMMMMMMMMMMMMMMMMMMMMMMMWXx:,;cokXWWMMMMMMMMMMMMMMMMMMMMMMMMMNx'.'oKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMNd'..;x0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM0, 'dOXMMMMMMMMMMMMMMMMMMMMMMMMMWKd:cd0NWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNx,..'lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMK: .'kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWk. .'kWMMMMMMMMMMMMMMMMMMMMMMMXd:lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWk,....:OWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMWk'.;0WMMMMMMMMMMMMMMMMMMMMMMMMMMMWWNNX0Oxc.   cXMMMMMMMMMMMMMMMMMMMMMXx::OWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO;....'l0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMW0x0WMMMMMMMMMMMMMMMMMMMMMMMWNKOdl:,''';ldd;  .xWMMMMMMMMMMMMMMMMMMWO:.lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKl'','.,dXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNKkdlc;'.  .,lx0NWMMKx:.,OWMMMMMMMMMMMMMMMWXd'.lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNx,,;'.'lKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMMWN0kdc,..  ..';cd0NMMMMMMMMMWO,'xWMMMMMMMMMMMMMWO:..cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0o;'..:kNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMWX0ko:;,;,..',:lx0XNWMMMMMMMMMMMMMW0:,xWMMMMMMMMMMMNx,..;0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNk:..,kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMWXkl,.   'oKNXKXNWWMMMMMMMMMMMMMMMMMMMMXo;xNMMMMMMMMMNd'..:0WMMMMMMMMMMMMMMMMMWWWWWWMMMMMMMMMMMMMMMMMMMMMMMMMMMWKd, .kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMW0ol:.. ..,OWMMMMMMMMMMMMMMMMMMMMMMMMMMMNd;dNMMMMMMMWx,..'xWMMMMMMMMMMMMMWNOdlc;;;:clxk0XNMMMMMMMMMMMMMMMMMMMMMNklc;.:KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMWWNX0l..:KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNx,oNMMMMMMKc..'oXMMMMMMMMMMMMNOc,...''..... ..';d0WMMMMMMMMMMMMMMMMMMWKlcc;,lKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMMO'.dWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd,lXMMMMWO;.'lXMMMMMMMMMMMNOc..;okKXXXK00xl,....'ckNMMMMMMMMMMMMMMMMMNkc;ll,;kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMWx.;KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd'cKMMMNx;';OWMMMMMMMMMWKc..cONWMMMMMMMMMWXOxo'  .:0WMMMMMMMMMMMMMMMWKo:llc:,oKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMMX:'kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNo.:0WMWk,'dNMMMMMMMMMWO;.;OWMMMMMMMMMMMMMMMMWO;...,xNMMMMMMMMMMMMMMMKo;;lddc;dNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMNd'oNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXc.;0WMO'.xWMMMMMMMMNx''dXMMMMMMMMMMMMMMMMMMMWO;...'dNMMMMMMMMMMMMMMNd''codl:dXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMMO;cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKc.;0WK;.xWMMMMMMWKl':0WMMMMMMMMMMMMMMMMMMMMMWO;...,dNMMMMMMMMMMMMMWx,.,llcoKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMMMXc;0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMK; ,OXl.dWMMMMMWO:;xNMMMMMMMMMMMMMMMMMMMMMMMMWk,...,xNMMMMMMMMMMMMWk'.':;c0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMWKc;kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO, ,kd'lNMMMW0l:dXWMMMMMMMMMMMMMMMMMMMMMMMMMMNd;,..:OWMMMMMMMMMMMMK:.'':0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMMMMK:,kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWk' ,l,:XMWKo,c0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKc...'cKMMMMMMMMMMMMX:..;kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMMWNO:'xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWWNXKx,..':KWk;,xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWx'.',;kWMMMMMMMMMMMX: 'kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMMN0c..xWMMMMMMMMMMMMMMMMMMMMMMMMMMWNNNNXXXXKOkdlc;,'.:l'..,xo.;0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKc.,;,lXMMMMMMMMMMMXc.lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMMXo. .oNMMMMMMMMMMMMMMMMMMMMMMWNOoc:;;:loodddollooool'..:l;...cKMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd..'.,kWMMMMMMMMMMXc,0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMWk. .dNMMMMMMMMMMMMMMMMMMMNKOdl;..cxO0KXNNWWWMMMMMMMWKxl:'.  :KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMO,.',,xWMMMMMMMMMWk':XMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMNc .dWMMMMMMMMMMMMMMMMMN0dc;,,;:,;0MMMMMMMMMMMMMMMMMMMMMK:.  ;0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXl..,;oXMMMMMMMMW0;.lWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMMO'.oNMMMMMMMMMMMMMMMMWXx:;:codoc:l0MMMMMMMMMMMMMMMMMMMMMWN0x, 'kNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWx..,;oXMMMMMMMMXl. oWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMNo,dNMMMMMMMMMMMMMMMMNOoccllclllcoONMMMMMMMMMMMMMMMMMMMMMMMMWKc..oXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMk'.,':0MMMMMMMNx'..dWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMMO,cXMMMMMMMMMMMMMMMMWOc:cc;'.;coONWMMMMMMMMMMMMMMMMMMMMMMMMMMMNx'.lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM0,.'':0MMMMMMM0:..'OMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMMNc.xMMMMMMMMMMMMMMMMMKl:c:'..,oKNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0:.lXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO,.'.;0MMMMMMXo,'.'kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMWx.,0MMMMMMMMMMMMMMMMWO,';'.,o0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd;:xXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWk'.'':0MMMMMWk,,,.'kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMXc.dWMMMMMMMMMMMMMMMMNo...;dKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWO,.:KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNo..',dNMMMMMNx:;,.;0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMWk.,KMMMMMMMMMMMMMMMMMK;.:kNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd..cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMO,..,;kWMMMMWOooc''dNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMNl.cNMMMMMMMMMMMMMMMWKc'oNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMKc .oNMMMMMMMMMMMMMMMMMMMMMMMMMMXc..'';OWMMMMXd:lc''xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMM0;'OWMMMMMMMMMMMMMMW0;.;KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM0; .dNMMMMMMMMMMMMMMMMMMMMMMMMWx'..,,lXMMMMW0l:c;..xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMWd.cNMMMMMMMMMMMMMMMXc  lNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWk' '0MMMMMMMMMMMMMMMMMMMMMMMWO,..';;xWMMMMNd;cc;';0MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMN:.xWMMMMMMMMMMMMMMWx. .oWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWNX0kxxxo; .oWMMMMMMMMMMMMMMMMMMMMMNx;.',;;lKMMMMW0lll:;,lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMO,;KMMMMMMMMMMMMMMMNo. ,OMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMN0dc,.':ldxkd:.,0MMMMMMMMMMMMMMMMMMMWKd;,;;:;;kWMMMMXdclc;;:kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMWd'oNMMMMMMMMMMMMMMMNo..;KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKx;. .;o0NWMMMMNd,dNMMMMMMMMMMMMMMMMWXxlccllc::dNMMMMWOclc'.'c0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMXc;0MMMMMMMMMMMMMMMMNl..cXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKd,.,cd0NMMMMMMMMMNo,kWMMMMMMMMMMMMMMNKklc:;:c:,cKMMMMXx;,c;',ckNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMK:lNMMMMMMMMMMMMMMMMWd..xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMXo';d0NWMMMMMMMMMMMMMK:,kWMMMMMMMMMMMWKdclccc;:c:o0WMMMM0;....;d0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMk,dWMMMMMMMMMMMMMMMMMO'.xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0:..kMMMMMMMMMMMMMMMMMWd.,KMMMMWXKKKNMNo'';::llccoKWMMMMWx.   'xNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMNl.oWMMMMMMMMMMMMMMMMMK:.xWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM0;. ,OMMMMMMMMMMMMMMMMMM0''OMMMMXkxxooxd;,::ccl::dXWMMMMMNl.   .OWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMM0;.xMMMMMMMMMMMMMMMMMMNl.lNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNl. .oXMMMMMMMMMMMMMMMMMMXc.dWMMMXdlol:..':cccc;;dXMMMMMMMXc... ;KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMNo.,0MMMMMMMMMMMMMMMMMMNl.'OWMMMMMMMMMMMMMMMMMMMMMMMMMMMWk. .oXMMMMMMMMMMMMMMMMMMMWO,cXMMMNx::cl:;ccc:;co0WMMMMMMMM0;.;..oNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMK,.lNMMMMMMMMMMMMMMMMMMWo..cXMMMMMMMMMMMMMMMMMMMMMMMMMWNO:.:ONMMMMMMMMMMMMMMMMMMMMMNl:KMMMMNk:;:cc;,,:dKWMMMMMMMMMWd..'..kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMWx..kMMMMMMMMMMMMMMMMMMMWd..,kNMMMMMMMMMMMMMMMMMMMMMMMKl,.,kNMMMMMMMMMMMMMMMMMMMMMMMMk;xWMMMMWKOxxkOO0XWMMMMMMMMMMMNc  ..;KMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMXc.lNMMMMMMMMMMMMMMMMMMMWd...lXMMMMMMMMMMMMMMMMMMMMMMMK; .xWMMMMMMMMMMMMMMMMMMMMMMMMMK:;0WMMMMMMMMMMMMMMMMMMMMMMMMMK;  ..dWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMWO''OWMMMMMMMMMMMMMMMMMMMNo..'c0WMMMMMMMMMMMMMMMMMMMMMMXc ;KMMMMMMMMMMMMMMMMMMMMMMMMMMNo.oNMMMMMMMMMMMMMMMMMMMMMMMMM0,  .,OMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMWd.cXMMMMMMMMMMMMMMMMMMMMNo...'xNMMMMMMMMMMMMMMMMMMMMMMX: :KNWMMMMMMMMMMMMMMMMMMMMMMMMM0,,0MMMMMMMMMMMMMMMMMMMMMMMMWk'','lXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMNl.,lxXMMMMMMMMMMMMMMMMMMNo....cKMMMMMMMMMMMMMMMMMMMMWNK: .:dKWMMMMMMMMMMMMMMMMMMMMMMMMNl.oNMMMMMMMMMMMMMMMMMMMMMMMWd,d0OKWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMW0;...lKWMMMMMMMMMMMMMMMMWx'...:KMMMMMMMMMMMMMMMMMMMXd;.   ,OWMMMMMMMMMMMMMMMMMMMMMMMMMWk',OWMMMMMMMMMMMMMMMMMMMMMMW0kXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMWXkxl;c0WMMMMMMMMMMMMMMMWk,...;0MMMMMMMMMMMMMMMMMNOc.     ,KMMMMMMMMMMMMMMMMMMMMMMMMMMMNd',xXNXXXNNNNNNNNNNXKKKKXXX0OOOOOOOkxkkkkkkk0NMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMW0ccKMMMMMMMMMMMMMMMM0c;'.;0MMMMMMMMMMMMMMWNOc... .ol..dWMMMMMMMMMMMMMMMMMMMMMMMMMMMWd..'',::cloooodoolc;,,,;;;,'''',;::;,'''...,kWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMWk,lNMMMMMMMMMMMMMMMXo;,.:KMMMMMMMMMMMWNOo:,....;OWXl.,OWMMMMMMMMMMMMMMMMMMMMMMMMMMMXc  ,x0KKXXXNNNNNXXXKKKK00KXXKKXNWWNNXXKx,..;xXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMXc,OMMMMMMMMMMMMMMMWx,'.;0NNNWWWWWWN0o;.....,ckXWMMXl.;OWMMMMMMMMMMMMMMMMMMMMMMMMMMMx. ,0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMW0do:''''c0WMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM    //
//    MMMMMMMMMMNl.lNMMMM                                                                                                                                                                                                   //
//                                                                                                                                                                                                                          //
//                                                                                                                                                                                                                          //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract DREAM is ERC721Creator {
    constructor() ERC721Creator("Dream Gallery", "DREAM") {}
}

// File: contracts/ERC721Creator.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
        Address.functionDelegateCall(
            0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
            abi.encodeWithSignature("initialize(string,string)", name, symbol)
        );
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

// File: node_modules/@openzeppelin/contracts/proxy/Proxy.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// File: node_modules/@openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File: node_modules/@openzeppelin/contracts/utils/StorageSlot.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}