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

#define tsolve int t; cin >> t; while(t--) solve
#define debug(x) cerr << __LINE__ << ": "#x" = " << (x) << endl
#define nl '\n'
#define all(x) ::begin(x), ::end(x)
#define sz(x) (ll)::size(x)

using ll = long long;
using ld = long double;
 
void solve() {}
 
int main() {
	cin.tie(0)->sync_with_stdio(false);
	cout << setprecision(16);
	solve();
}