摘要：
原题：http://bailian.openjudge.cn/practice/2456/ 描述 Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located alon 阅读全文
摘要：
原题：http://bailian.openjudge.cn/practice/1042/ 描述 John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in th 阅读全文