[HackerEarth] In Poornima college, PIET CS Deparment is shifting from basement to the third floor. The HOD of the department is trying to finding the number ways to reach the third floor. You are give - 题解

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题目信息
题号 P14120
标题 [HackerEarth] In Poornima college, PIET CS Deparment is shifting from basement to the third floor. The HOD of the department is trying to finding the number ways to reach the third floor. You are give
难度 普及
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