[백준(BOJ)] 10872번: 팩토리얼

#include <stdio.h>

int fact(int n)
{
	if(n == 1 || n == 0)
		return 1;
	return fact(n-1)*n;
}
int main()
{
    int N;
    scanf("%d", &N);
    printf("%d", fact(N));
}