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Problem Description 度熊面前有一个全是由1构成的字符串,被称为全1序列。你可以合并任意相邻的两个1,从而形成一个新的序列。对于给定的一个全1序列,请计算根据以上方法,可以构成多少种不同的序列。Input 这里包括多组测试数据,每组测试数据包含一个正整数N,代... 阅读全文
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Problem Description N个气球排成一排,从左到右依次编号为1,2,3….N.每次给定2个整数a b(a <= b),lele便为骑上他的“小飞鸽”牌电动车从气球a开始到气球b依次给每个气球涂一次颜色。但是N次以后lele已经忘记了第I个气球已经涂过几次颜色了,你能... 阅读全文
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Problem Description Ignatius is so lucky that he met a Martian yesterday. But he didn’t know the language the Martians use. The Martian gives... 阅读全文
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CSS概述CSS是层叠样式表(Cascading Style Sheets)用来定义网页的显示效果。可以解决html代码对样式定义的重复,提高了后期样式代码的可维护性,并增强了网页的显示效果功能。简单一句话:CSS将网页内容和显示样式进行分离,提高了显示功能。 那么CSS和HTML... 阅读全文
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Problem Description Nowadays, a kind of chess game called “Super Jumping! Jumping! Jumping!” is very popular in HDU. Maybe you are a good boy... 阅读全文
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Problem Description Ignatius is building an Online Judge, now he has worked out all the problems except the Judge System. The system has to r... 阅读全文