#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int ans;
	if (n % 2 > 0)
		ans = 2;
	else
		ans = 3;
	while (n % 2 == 0)
		n /= 2;
	if (n == 1)
		ans = 1;
	printf("%d\n", ans);
	return 0;
}