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.

Input

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

Output

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

Constraints

• 1 ≤ N ≤ 10^{5}

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.

见题面 Input 部分

见题面 Output 部分