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Rikka with Subset As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is on 阅读全文
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N! Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N! Input One N in one line, process to the end of file. Output For each N, output N! i 阅读全文
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Harmonious Army Now, Bob is playing an interesting game in which he is a general of a harmonious army. There are n soldiers in this army. Each soldier 阅读全文