#include <bits/stdc++.h>
using namespace std;

int main(){
  int X, Y;
  cin >> X >> Y;
  if(X > Y) swap(X, Y);
  if((X + 4) % 12 != Y) cout << (X + 4) % 12;
  if((Y + 4) % 12 != Y) cout << (Y + 4) % 12;
}