#include <bits/stdc++.h>

using namespace std;

ifstream in("adunare.in");
ofstream out("adunare.out");

int main()
{
    int a, b; in >> a >> b;
    int num = a + b;

    if(num % 4 == 0) exit(0);
    if(num % 4 == 1) exit(1);
    if(num % 4 == 2) exit(132);
    if(num % 4 == 3) exit(158);
}