1912 : (재귀함수) 팩토리얼 계산

https://codeup.kr/problemsetsol.php?psid=21

 

import sys

sys.setrecursionlimit(10**7)

 

n = int(input())

 

def add_ft(a, sum):

  if a < n+1 :

    sum = sum * a

    return add_ft(a + 1, sum)

  else:

    return sum

 

print(add_ft(2, 1))