Problem:
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.

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.

Solution in Python (2.7.6) (judge verdict: Wrong Answer)

#!/usr/bin/python

import math
import sys

def main(argv):
    for line in sys.stdin:
        n = int(line)

        answer = 737935835
        if n < 50000:
            answer = math.factorial(n)
        elif n > 50000:
            for i in xrange(n + 1, 100000):
                answer *= (i % (10**9 + 7))
        print answer % (10**9 + 7)

if __name__ == "__main__":
    main(sys.argv)