#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define nl '\n'
#define tsolve int t; cin >> t; while(t--) solve
#define all(x) ::begin(x), ::end(x)
#define sz(x) (ll)::size(x)
#define debug(x) cerr << __LINE__ << #x << ": " << (x) << endl
 
void solve() {}
 
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout << setprecision(16);
	solve();
}