#牛栏

洛谷 P2888 [USACO07NOV]牛栏Cow Hurdles

题目戳 题目描述FarmerJohnwantsthecowstoprepareforthecountyjumpingcompetition,soBessieandthegangarepracticingjumpingoverhurdles.Theyaregettingtired,though,sotheywa...