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说明

编一程序求满足不等式$1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{n}\ge m$  的最小$n$值。
其中，$n$,$m$为正整数。

输入格式

输入$m$。($m\le 11$)

输出格式

输出$n$。

样例

3

11