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G. Yash And Trees 题目连接： Description Yash loves playing with trees and gets especially excited when they have something to do with prime numbers. On hi 阅读全文
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Picture 题目链接 http://poj.org/problem?id=1177 Description A number of rectangular posters, photographs and other pictures of the same shape are pasted o 阅读全文
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Vases and Flowers 题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=4614 Problem Description Alice is so popular that she can receive many flowers everyd 阅读全文
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Transformation 题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=4578 Problem Description Yuanfang is puzzled with the question below: There are n intege 阅读全文