Opei-sd

// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.5.9;

import "@0x/contracts-erc20/contracts/src/ERC20Token.sol";

/**
 * @title SampleERC20
 * @dev Create a sample ERC20 standard token
 */

Opei-sd

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.8.2 <0.9.0;

contract Storage {

    uint256 number;

    function store(uint256 num) public {
        number = num;