#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define rep(i,n) for(int i=0; i<(int)(n); i++)


int main(){
    int x,y; cin >> x >> y;
    set<set<int>> valid_sets;
    rep(s,4) valid_sets.insert(set<int>{ s, s+4, s+8 });
    rep(z,12) if(valid_sets.count(set{x,y,z})){ cout << z << '\n'; }
    return 0;
}

struct ios_do_not_sync{
    ios_do_not_sync(){
        std::ios::sync_with_stdio(false);
        std::cin.tie(nullptr);
    }
} ios_do_not_sync_instance;