L - Subway(最短路spfa) You have just moved from a quiet Waterloo neighbourhood to a big, noisy city. Instead of getting to ride your bike to school every day, you now get to walk and take the subway. Because you don't want to be late for class, you want…
Extended Traffic 题目链接: http://acm.hust.edu.cn/vjudge/contest/122685#problem/O Description Dhaka city is getting crowded and noisy day by day. Certain roads always remain blocked in congestion. In order to convince people avoid shortest routes, and he…
题目链接: POJ:http://poj.org/problem?id=3835 HDU:http://acm.hdu.edu.cn/showproblem.php?pid=3268 Problem Description On the evening of 3 August 1492, Christopher Columbus departed from Palos de la Frontera with a few ships, starting a serious of voyages o…