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In a highly developed alien society, the habitats are almost infinite dimensional space. In the history of this planet,there is an old puzzle. You hav 阅读全文
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突然有一天默默无闻的QAQ变成了FJUTOJ的终极大BOSS，而使得QAQ变强的是QAQ掌握有一个由小写字母组成魔咒。 作为QAQ小弟的V_Dragon偷偷的听到了一部分连续魔咒，V_Dragon非常的激动，因为这一部分魔咒能使得菜鸡V_Dragon 变强100倍。但V_Dragon的听力不是很好， 阅读全文
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A + B for you again Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7978 Accepted Submission(s): 阅读全文
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Consider a group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it is possible 阅读全文
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Problem E. What a Ridiculous Election Description In country Light Tower, a presidential election is going on. There are two candidates, Mr. X1 and Mr 阅读全文