银狼的黎明

时间限制: 1 Sec 内存限制: 128 MB 题目描述 在一片苍茫的大海上，有n座岛屿，岛屿与岛屿之间由桥梁连接，所有的岛屿刚好被桥梁连接成一个树形结构，即共n-1架桥梁，且从任何一座岛屿出发都能到达其他任何一座岛屿。 第i座桥梁有一个承重量wi，表示该桥梁一次性最多通过重量为wi的货物。 现在有m个货物运输路线，第i个路线要从岛屿xi出发到达岛屿yi。为了最大化利益，你需要求出在不...

题目描述 Orz has two strings of the same length: A and B. Now she wants to transform A into an anagram of B (which means, a rearrangement of B) by changing some of its letters. The only operation th...

时间限制: 6 Sec 内存限制: 128 MB 题目描述 In GGO, a world dominated by gun and steel, players are fighting for the honor of being the strongest gunmen. Player Shino is a sniper, and her aimed shot kills...