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我也来提供两组数据吧。。还是挺容易错的。In Reply To:试下这个数据,它的输出是-1 Posted by:HYSBZ at 2005-07-26 23:56:25 input: 7 20 1 10 2 11 3 12 4 13 5 14 12 19 16 20 output: 4 input: 10 10 1 3 2 4 3 5 4 6 5 7 6 8 7 9 8 10 9 10 10 10 output: 4 Followed by:
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