#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define db long double
#define vii vector<ll>
#define pll pair<ll, ll>
#define F first
#define S second


const ll N = (ll) 3e5 + 5;
const ll mod = (ll) 1e9 + 7;
const ll inf = (ll) 1e18;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int t = 1;
    // cin >> t;
    while(t--) {
        ll a, b, c, i, j, k, m, n, o, x, y, z;
        cout << 0 << "\n";
    }
}