// https://omegaup.com/arena/problem/Cuantos-valen-7 
#include <stdio.h> 
 
int main( ) { 
   int a, b; 
   scanf("%d%d", &a, &b); 
 
   if (a == 7 && b == 7) { 
      printf("2"); 
   } else if (a == 7 || b == 7) { 
      printf("1"); 
   } else { 
      printf("0"); 
   } 
}