[洛谷 3033][USACO11NOV]Cow Steeplechase 题目链接 https://www.luogu.com.cn/problem/P3033 继续阅读[洛谷 3033][USACO11NOV]Cow Steeplechase
[洛谷 5305][GXOI/GZOI2019]旧词 题目链接 https://www.luogu.com.cn/problem/P5305 继续阅读[洛谷 5305][GXOI/GZOI2019]旧词
[洛谷 3440][POI2006]SZK-Schools 题目链接 https://www.luogu.com.cn/problem/P3440 继续阅读[洛谷 3440][POI2006]SZK-Schools