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Codeforces
5 题 · 0 已翻译
Codeforces Round 447 (Div. 2)
2017/11/19 21:55
120 分钟
894
Codeforces
A
QAQ
QAQ
800
仅原文
B
Ralph And His Magic Field
Ralph And His Magic Field
1800
仅原文
C
Marco and GCD Sequence
Marco and GCD Sequence
1900
仅原文
D
Ralph And His Tour in Binary Country
Ralph And His Tour in Binary Country
2200
仅原文
E
Ralph and Mushrooms
Ralph and Mushrooms
2100
仅原文