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Codeforces Educational Round 21
05-19
Codeforces Round 413 Division 2
05-12
Codeforces Round 412 Division 2
05-08
Codeforces Round 411 Division 2
05-07
Codeforces Round 410 Div2 Problem C
04-27
Codeforces Round 408 Div2 Problem D
04-16
Codeforces Round 408 Div2 Problem C
04-16
Codeforces Technocup 2017 Elimination Round 1 Problem D
01-17
Codeforces Round 284 Div2 Problem C
01-17
Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest Problem F
01-17
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