洛谷 P3003 [USACO10DEC]苹果交货Apple Delivery 题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P &l…
P3003 [USACO10DEC]苹果交货Apple Delivery 题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <=…
题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <= 100,000) pastures conveniently numbe…
题目描述 贝西有两个又香又脆的红苹果要送给她的两个朋友.当然她可以走的\(C(1 \leq C \leq 200000)\)条"牛路"都被包含在一种常用的图中,包含了\(P(1 \leq P \leq 100000)\)个牧场,分别被标为\(1..P\).没有"牛路"会从一个牧场又走回它自己."牛路"是双向的,每条牛路都会被标上一个距离.最重要的是,每个牧场都可以通向另一个牧场.每条牛路都连接着两个不同的牧场\(P1_i\)和\(P2_i(1&l…
P3004 [USACO10DEC]宝箱Treasure Chest 题目描述 Bessie and Bonnie have found a treasure chest full of marvelous gold coins! Being cows, though, they can't just walk into a store and buy stuff, so instead they decide to have some fun with the coins. The N (1…
