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http://poj.org/problem?id=3181 Description Farmer John goes to Dollar Days at The Cow Store and discovers an unlimited number of tools on sale. During 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=2546 Problem Description 电子科大本部食堂的饭卡有一种很诡异的设计,即在购买之前判断余额。如果购买一个商品之前,卡上的剩余金额大于或等于5元,就一定可以购买成功(即使购买后卡上余额为负),否则 阅读全文
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Combine String #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #include<cmath> #include<queue> #include<vector> #include<map 阅读全文