usaco07nov专题

POJ 3613/P2886 [USACO07NOV]牛继电器Cow Relays

题目描述 For their physical fitness program, N (2 ≤ N ≤ 1,000,000) cows have decided to run a relay race using the T (2 ≤ T ≤ 100) cow trails throughout the pasture. Each trail connects two different in

洛谷 P2888 [USACO07NOV]牛栏Cow Hurdles

题目描述 Farmer John wants the cows to prepare for the county jumping competition, so Bessie and the gang are practicing jumping over hurdles. They are getting tired, though, so they want to be able to u