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#3796: pipoika
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#3796: pretentious
Accepted: : 26
$$\det(AB) = \sum_{S\in\tbinom{[n]}m} \det(A_{[m],S})\det(B_{S,[m]})$$
#3796: pzjQWQ
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#3796: zsj6315
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小鸡子露出黑脚了吧
#3796: zsofustb
Accepted: : 26
#3796: zxl163com
Accepted: : 26
#3927: _clint
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#3927: chunzhifeng
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#3927: codwarm
Accepted: : 25
#3927: convie
Accepted: : 25
我要射金
#3927: cosf
Accepted: : 25