Contest1227/E.cpp

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