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contracts...RoyaltiesNFT.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Royalty.sol";

contract Royalties is ERC721Royalty {
    constructor(address _receiver, uint96 feeNumerator) ERC721("Royalties", "RYLT") {
        _setDefaultRoyalty(_receiver, feeNumerator);
    }

    function safeMint(address to, uint256 tokenId, address receiver, uint96 feeNumerator) public {
        _safeMint(to, tokenId);

        _setTokenRoyalty(tokenId, receiver, feeNumerator);
    }
}