[HackerEarth] Rishab and Mayank are very good friends. Once Mayank challenged Rishab to answer his question. Since, Rishab is very over confident, he accepted the challenge. - 题解

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题目信息
题号 P17721
标题 [HackerEarth] Rishab and Mayank are very good friends. Once Mayank challenged Rishab to answer his question. Since, Rishab is very over confident, he accepted the challenge.
难度 普及
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