Codeforces Round #163 (Div. 2) A. Stones on the Table

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Codeforces Round #295 (Div. 2) A. Pangram

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Codeforces Beta Round #40 (Div. 2) A. Translation

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Codeforces Round #304 (Div. 2) A. Soldier and Bananas

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Codeforces Round #267 (Div. 2) A. George and Accommodation

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Codeforces Round #247 (Div. 2) A. Black Square

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Codeforces Beta Round #47 A. Domino piling

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Codeforces Round #375 (Div. 2) A. The New Year: Meeting Friends

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Codeforces Round #146 (Div. 2) A. Boy or Girl

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Codeforces Beta Round #94 (Div. 2 Only) A. Cookies

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