#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll=long long;
using Graph=vector<vector<int>>;
#define INF 1000000000
#define MOD 998244353
#define MAX 1000

int main(){
  int X,Y;
  cin>>X>>Y;
  int r=X%4;
  int a=X/4;
  int b=Y/4;
  cout<<(3-a-b)*4+r<<'\n';
}