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// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "erc721a/contracts/ERC721A.sol"; 
pragma solidity ^0.8.7;
contract WanderingPlanetOfficial is ERC721A, Ownable, Pausable, ReentrancyGuard {
    event BaseURIChanged(string newBaseURI);
    event WhitelistSaleConfigChanged(Period config_);
    event PublicSaleConfigChanged(Period config_);
    event RefundConfigChanged(Period config_);
    event Minted(address minter, uint256 amount);
    event Withdraw(address indexed account, uint256 amount);
    event ContractSealed();
    struct Period{
        uint256 startTime;
        uint256 endTime;
    }
    uint256 public constant PRICE = 0;  //Price
    uint64 public constant MAX_TOKEN = 2999;
    uint64 public constant MAX_TOKEN_PER_ADD = 1;
    Period public whitelistsaletime;
    Period public publicsaletime;
    Period public refundtime;
    bool public contractSealed;
    string public baseURI;
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