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#include <bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;

void solve(){
   
}

int main()
{
    fast;
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    freopen("Error.txt", "w", stderr);
#endif
    int t = 1; //cin >> t;
    for (int i = 1 ; i <= t; ++i)
    {
        solve();
        if (i != t) cout << '\n';
    }
    return 0;
}