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<n;写成<n-1;当初想到哪里去了。。汗。。

Posted by lyq00 at 2009-05-01 01:09:08 on Problem 2472
写成<n-1时,还以为是别处错了,又乱改了下,结果竟过了。。。。
又认真看下了,改下<n,把乱改的又改回来,又AC了。。
汗。。。

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