C++ 詳解 (含解題想法)
https://www.tseng-school.com/2026/02/09/apcs/apcs202510/#%E7%AC%AC%E4%B8%89%E9%A1%8C-%E5%95%86%E5%93%81%E5%8C%85%E8%A3%9D%E5%9C%B0-ZeroJudge-r490