100551: [AtCoder]ABC055 B - Training Camp

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 $10^{9}+7$.

Sample Input 1

3

Sample Output 1

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 $6$.

Sample Input 2

10

Sample Output 2

3628800

Sample Input 3

100000

Sample Output 3

457992974

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