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Codeforces
5 题 · 0 已翻译
Codeforces Round 175 (Div. 2)
2013/03/21 23:30
120 分钟
285
Codeforces
A
Slightly Decreasing Permutations
Slightly Decreasing Permutations
1100
仅原文
B
Find Marble
Find Marble
1200
仅原文
C
Building Permutation
Building Permutation
1200
仅原文
D
Permutation Sum
Permutation Sum
1900
仅原文
E
Positions in Permutations
Positions in Permutations
2600
仅原文