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Description Iahub and Iahubina went to a date at a luxury restaurant. Everything went fine until paying for the food. Instead of money, the waiter wan 阅读全文
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Description 在一些知名的表格处理系统中（比如：excel表格），我们经常用大写的字母来表示列，例如A表示第1列，B表示第2列，第26列用Z来表示，同时第27列我们用AA来表示，第28列我们用AB来表示，第29列我们用AC来表示，AZ表示第52列，ZZ之后我们就需要用3个字母来表示列了。 阅读全文
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Description Tina Town is a friendly place. People there care about each other. Tina has a ball called zball. Zball is magic. It grows larger every day 阅读全文
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Description Given two integers n and m, count the number of pairs of integers (a,b) such that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an integer. This 阅读全文
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Description Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N! Description Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N 阅读全文
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Description Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as d 阅读全文