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秋季限定生成树问题
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ID
15385
Time
750ms
Memory
512MiB
Difficulty
9
Tags
贪心
数论
深度优先搜索 DFS
素数判断,质数,筛法
最大公约数 gcd
容斥原理
Ad-hoc
筛法
# Submissions
0
Accepted
0
Uploaded By
Hydro
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