Contest1213/B.cpp

#include <bits/stdc++.h>
using namespace std;
int main(int argc, char const *argv[]) {
  int a, b;
  while (cin >> a >> b) {
    if (a == 0 && b == 0) break;
    int c = (a + b) % 7;
    if (c == 0) c = 7;
    cout << c << endl;
  }
  return 0;
}