Problem Statement

We have an integer $N$.

Print an integer $x$ between $N$ and $10^{13}$ (inclusive) such that, for every integer $y$ between $2$ and $N$ (inclusive), the remainder when $x$ is divided by $y$ is $1$.

Under the constraints of this problem, there is always at least one such integer $x$.

Constraints

• All values in input are integers.
• $2 \leq N \leq 30$

Input

Input is given from Standard Input in the following format:

N

Output

Print an integer $x$ between $N$ and $10^{13}$ (inclusive) such that, for every integer $y$ between $2$ and $N$ (inclusive), the remainder when $x$ is divided by $y$ is $1$.

If there are multiple such integers, any of them will be accepted.