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The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15 sliding tiles, eac 阅读全文
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The binomial coefficient C(m, n) is defined as C(m, n) = m! (m − n)! n! Given four natural numbers p, q, r, and s, compute the the result of dividing 阅读全文
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In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wants to bring this feature to his image retrie 阅读全文
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These are N cities in Spring country. Between each pair of cities there may be one transportation track or none. Now there is some cargo that should b 阅读全文
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Time Limit: 5000MS Memory Limit: 131072K Total Submissions: 115624 Accepted: 35897 Case Time Limit: 2000MS Description You have N integers, A1, A2, .. 阅读全文