#include <bits/stdc++.h>

using namespace std;

typedef unsigned long long ull;
typedef signed long long ll;
typedef unsigned int uint;
typedef unsigned char uchar;

const int nmax = 1e5;

int main() {
    freopen("adunare.in", "r", stdin);
    freopen("adunare.out", "w", stdout);
    
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    int a, b;
    cin >> a >> b;
    //cout << a + b << "\n";
    cout << 0 << "\n";

    return 0;
}