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Polycarp Training CodeForces – 1165B | Solution

Polycarp wants to train before another programming competition. During the first day of his training he should solve exactly 11 problem, during the second day — exactly 22 problems, during the third day — exactly 33 problems, and so on. During the kk-th day he should solve kk problems.

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Matryoshka Dolls Gym – 102267C | Soltution

Matryoshka Dolls are Russia’s most popular souvenirs. They are sets of wooden figurines of decreasing size placed one inside another, though they have the same exact shape.

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