codeforce_template.cpp

/*
GDB online Debugger
https://www.onlinegdb.com/
*/
#include <bits/stdc++.h>
 
using namespace std;
 
#define ALL(x) x.begin(), x.end()
 
typedef long long int lld;
typedef pair<int, int> pii;
 
int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.precision(15);
	cout << fixed;
	
	return 0;
}

C++ trick