import java.util.ArrayList;

public class Main
{
	public static void main(String[] args)
	{
		int test_case=50;
		while(test_case-->0)
		{
			Codeforces CF=new Codeforces();
			CF.solve();
		}
	}
}

class Codeforces
{
	public ArrayList<Integer>a;
	public Codeforces()
	{
		a=new ArrayList<Integer>(10000000);
	}
	public void solve()
	{
		
	}
}