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Re:sunhaowen的另一种解法是欧拉函数，nb的想法啊。。。In Reply To:自己第一次独立做的真正意义上的数学题，小小地用了一下容斥，素数 Posted by:yuanchuanshun at 2010-11-22 22:06:09 Followed by: Post your reply here: |
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