// https://omegaup.com/arena/problem/Cuantos-valen-7
#include <iostream>

int main( ) {
   int a, b;
   std::cin >> a >> b;

   if (a == 7 && b == 7) {
      std::cout << 2;
   } else if (a == 7 || b == 7) {
      std::cout << 1;
   } else {
      std::cout << 0;
   }
}