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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

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【POJ】[3258]River Hopscotch

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【POJ】[2456]Aggressive cows

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【UVa】[11582]Colossal Fibonacci Numbers!

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【杭电】[1872]稳定排序

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【LightOJ】 [1048]Conquering Keokradong