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权和为负的样例+不可能存在空集

Posted by ksmxb at 2016-05-08 11:17:15 on Problem 1192 and last updated at 2016-05-08 11:23:00
例如:
4
0 0 -1
0 1 -2
0 2 -3
0 3 -4

这样的样例事实上是可以存在的,另外这样的情况权和最大为-1,而n最小为1,因而不可能存在空集,但是题目后台数据只有一组= =,太弱

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