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Problem 2329 >> 可复制的样例输入
liu_runda @ 2017-02-15 05:35:38
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4 5
((((
Replace 1 2 )
Query 1 2
Swap 2 3
Invert 3 4
Query 1 4
Hineven @ 2018-04-07 17:16:34
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好人
Edwardfrog @ 2018-04-12 07:12:17
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顶回去
Joky_02 @ 2018-09-26 16:13:11
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好人
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