Computer 时限：1000ms Problem Description A school bought the first computer some time ago(so this c ...

Godfather 时限：2000ms Description Last years Chicago was full of gangster fights and strange mur ...

原文地址：http://www.cppblog.com/MatoNo1/archive/2011/07/13/150766.aspx 【2-SAT问题】现有一个由N个布尔值组成的序列A，给出一些限制 ...

Riding the Fences Farmer John owns a large number of fences that must be repaired annually. He t ...

A Walk Through the Forest Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Ja ...