DescriptionBob loves everything sweet. His favorite chocolate bar consists of pieces, each piece may contain a nut. Bob wants to break the bar of choc...
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其他好文 时间：
2016-01-26 15:04:59
阅读次数：
173
Description题目描述ZB loves playing StarCraft and he likes Zerg most!One day, when ZB was playing SC2, he came up with an idea:He wants to change the quee...
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其他好文 时间：
2016-01-19 20:54:13
阅读次数：
341
Alexander Charles McMillan loves to gamble, and during his last trip to the casino he ran across a new game. It is played on a linear sequence of squa...
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其他好文 时间：
2016-01-15 14:19:23
阅读次数：
195
机房网络不稳，同学们竞相比拼谁的RP好，不停地按电源，当然，最后RP都没用。然后DZY开始一展歌喉，开启了他的个人演唱会，掌声不绝。此时XZC准备踢馆，突然LMC脚踩霞光，身披战衣出现了，金光闪闪（当然这都是瞎扯的），制止了XZC。然而，没有听到他的歌喉，我们深感遗憾，但他的精神值得赞扬。威武霸气....
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其他好文 时间：
2016-01-09 20:19:07
阅读次数：
207
Little Hasan loves to play number games with his friends. One day they were playing a game whereone of them will speak out a positive number and the o...
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其他好文 时间：
2016-01-06 21:49:32
阅读次数：
304
ZCC loves cardsTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2362 Accepted Submission(s): 590Pr...
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其他好文 时间：
2016-01-02 18:32:11
阅读次数：
175
题目信息1068. Find More Coins (30)时间限制150 ms
内存限制65536 kB
代码长度限制16000 BEva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopp...
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其他好文 时间：
2015-12-28 12:28:53
阅读次数：
232
My father got me a computer for graduation with 512MB RAM and a Pentium processor. It came with Windows XP, and I used it to do 2D animation with Adob...
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系统相关 时间：
2015-12-25 18:48:33
阅读次数：
227
显然当且仅当$\gcd(i,j)=1$时才对答案有贡献，化简得\[\begin{eqnarray*}ans&=&\sum_{i=1}^n\sum_{j=1}^i\mu(ij)[\gcd(i,j)=1]\\ &=&\sum_{i=1}^n\sum_{j=1}^i\mu(ij)\sum_{d|i,d.....
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其他好文 时间：
2015-12-21 18:29:12
阅读次数：
142
B. The Best Gift Emily's birthday is next week and Jack has decided to buy a present for her. He knows she loves books so he goes to the local booksh....
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其他好文 时间：
2015-12-20 01:51:17
阅读次数：
192
