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B - Training Camp

Score : $200$ points

Problem Statement

Snuke loves working out. He is now exercising $N$ times.

Before he starts exercising, his power is $1$. After he exercises for the $i$-th time, his power gets multiplied by $i$.

Find Snuke's power after he exercises $N$ times. Since the answer can be extremely large, print the answer modulo $10^{9}+7$.

Constraints

• $1 ≤ N ≤ 10^{5}$

Input

The input is given from Standard Input in the following format:

$N$

Output

Print the answer modulo $10^{9}+7$.

3

6

• After Snuke exercises for the first time, his power gets multiplied by $1$ and becomes $1$.
• After Snuke exercises for the second time, his power gets multiplied by $2$ and becomes $2$.
• After Snuke exercises for the third time, his power gets multiplied by $3$ and becomes $6$.

10

3628800

100000

457992974

Print the answer modulo $10^{9}+7$.