摘要：
题目链接：http://poj.org/problem?id=2386 Description Due to recent rains, water has pooled in various places in Farmer John's field, which is represented b 阅读全文
摘要：
题目链接：http://poj.org/problem?id=3253 Description Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and 阅读全文
摘要：
题目链接：http://poj.org/problem?id=3617 Description FJ is about to take his N (1 ≤ N ≤ 2,000) cows to the annual"Farmer of the Year" competition. In this 阅读全文