#include <stdio.h>

int main(void)
{
	char s[6];
	int a;
	scanf("%s", s);
	s[5] = 0;
	s[0] == 63 ? a = s[2] == 50 ? 4 : 1 : (a = s[2] == 63 ? 14 : s[4] == 63 ? a = s[2] == 51 ? 1 : 4 : 0);
	printf("%d\n", a);
	return 0;
}