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Description It is raining again! Youssef really forgot that there is a chance of rain in March, so he didn't fix the roof of his house. Youssef's roof 阅读全文
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Description You've possibly heard about 'The Endless River'. However, if not, we are introducing it to you. The Endless River is a river in Cambridge 阅读全文
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Description The forces of evil are about to disappear since our hero is now on top on the tower of evil, and all what is left is the most evil, most d 阅读全文
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Description Zaid has two words, a of length between 4 and 1000 and b of length 4 exactly. The word a is 'good' if it has a substring which is equal to 阅读全文
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Description ACM-SCPC-2017 is approaching every university is trying to do its best in order to be the Champion, there are n universities, the ith of t 阅读全文
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Description X is well known artist, no one knows the secrete behind the beautiful paintings of X except his friend Y, well the reason that Y knows X's 阅读全文
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Description Rami went back from school and he had an easy homework about bitwise operations (and,or,..) The homework was like this : You have an equat 阅读全文
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Description A group of junior programmers are attending an advanced programming camp, where they learn very difficult algorithms and programming techn 阅读全文
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Description Tourist likes competitive programming and he has his own Codeforces account. He participated in lots of Codeforces Rounds, solved so many 阅读全文
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JankTao相亲记 解法：排序 David的沙漠之路 解法：贪心，尽量往最大的距离走，加上它经历过的加油站中最大的那个，模拟这个过程需要考虑很多情况 TJ的文件系统 解法：字符串处理 握手定理 解法：水题 Alice AND Bob 解法：模拟 建群数据 解法：字符串处理时间 阅读全文