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[AGC040F] Two Pieces
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ID
2181
Time
4000ms
Memory
1024MiB
Difficulty
(None)
Tags
数学
组合数学
排列组合
二项式定理
卡特兰数,Catalan
生成函数,GF
拉格朗日反演
# Submissions
0
Accepted
0
Uploaded By
jike1994
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