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Codeforces Round #203 (Div. 2) B. Resort
Codeforces Round #206 (Div. 1) A. Vasya and Robot
Codeforces Round #207 (Div. 1) A. Knight Tournament
Codeforces Global Round 22 C. Even Number Addicts
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Max Continuous Series of 1s
Power of 2
Painter’s Partition Problem
Allocate Books