Competitions
PP1 Week 3 Contest 1
Factorial
Find the factorial of a number.
Input
One integer n (0 ≤ n ≤ 20).
Output
Print the value of n!
Input example #1
3
Output example #1
6
Find the factorial of a number.
One integer n (0 ≤ n ≤ 20).
Print the value of n!
3
6