# Base Learn Roles - 1 

> Base Learn Newcomer Contract Code: 

**Published by:** [timurlenk](https://paragraph.com/@timurlenk/)
**Published on:** 2025-09-16
**Categories:** base
**URL:** https://paragraph.com/@timurlenk/base-learn-roles-1

## Content

// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; interface IBasicContractTest { function adder( uint _a, uint _b ) external returns (uint result, bool success); function subtractor( uint _a, uint _b ) external returns (uint result, bool success); } contract SafeMathContract is IBasicContractTest { function adder( uint _a, uint _b ) external pure override returns (uint result, bool success) { if (type(uint).max - _a < _b) { return (0, true); } else { result = _a + _b; return (result, false); } } function subtractor( uint _a, uint _b ) external pure override returns (uint result, bool success) { if (_b > _a) { return (0, true); } else { result = _a - _b; return (result, false); } } }

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