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【CodeForces】[667A]Pouring Rain

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【CodeForces】[669A]Little Artem and Presents

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【CodeForces】[675A]Infinite Sequence

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【CodeForces】[673A]Bear and Game

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【CodeForces】[651B]Beautiful Paintings

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【CodeForces】[621B]Wet Shark and Bishops

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【CodeForces】[673B]Problems for Round

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【CodeForces】[621A]Wet Shark and Odd and Even

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【NYOJ】[1046] 少乘法次数

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【NYOJ】[1023] 取石子（一）

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【UVa】[156]Ananagrams

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【CodeForces】[75A]Life Without Zeros

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【CodeForces】[66B]Petya and Countryside

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【CodeForces】[66A]Petya and Java

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【POJ】[3273]Monthly Expense