#include <stdio.h>
#define min(a1,a2) (a1==a2?-1:a1<a2?a1:a2)
#define max(a1,a2) (a1==a2?-1:a1>a2?a1:a2)

int main() {
  char c[3];
  scanf("%c %c %c",&c[0],&c[1],&c[2]);
  if(c[1]=='?') printf("14\n");
  else if (c[1]=='2') printf("4\n");
  else printf("1\n");
  return 0;
}