EducationalCodeforcesRound Codeforces Educational Codeforces Round 101 C. Building a Fence 範囲を管理してYES/NOcodeforcesPythonEducationalCodeforcesRound競技プログラミングPython
Codeforces Educational Codeforces Round 101 C. Building a Fence 範囲を管理してYES/NOcodeforcesPythonEducationalCodeforcesRound競技プログラミングPython