Problems
Factorial!
Factorial!
Find the factorial of an integer n.
Input
One integer n (0 ≤ n ≤ 3000).
Output
Print the factorial of n.
Input example #1
3
Output example #1
6
Find the factorial of an integer n.
One integer n (0 ≤ n ≤ 3000).
Print the factorial of n.
3
6