[재귀함수] 백준 10872번 : 팩토리얼

https://www.acmicpc.net/problem/10872

10872번: 팩토리얼

def fac(n):
    result = 1
    if n > 0 :
        result = n * fac(n-1)
    return result

n = int(input())
print(fac(n))