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确定比赛名次 TimeLimit: 2000/1000 MS (Java/Others)    Memory Limit:65536/32768 K (Java/Others) Total Submission(s): 25709    Accepted Submission(s): 10340 Problem Description 有N个比赛队（1     Input

HDOJ 5098 Smart Software Installer The software installation is becoming more and more complex. An automatic tool is often useful to manage this process. An IT company is developing a system management utility to install a set of software packages automati

Codeforces 919D - Substring 【有向图判环+DP】 You are given agraph with n nodes and m directed edges. One lowercase letter is assigned to each node. We define a path'svalue as the number of the most frequently occurring letter. For example, ifletters on a path ar

Codeforces 937D - Sleepy Game 【博弈+判环】 Petya and Vasyaarranged a game. The game runs by the following rules. Players have a directedgraph consisting of n vertices and m edges. One of the vertices contains a chip. Initially the chip is locatedat vertex s. Pl