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题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=2572 Problem Description 最后的挑战终于到了!站在yifenfei和MM面前的只剩下邪恶的大魔王lemon一人了!战胜他,yifenfei就能顺利救出MM。Yifenfei和魔王l 阅读全文
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题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5901 Problem Description Easy question! Calculate how many primes between [1...n]! Input Each line con 阅读全文