import java.io.*;
import java.util.*;
import java.math.*;

public class Solution {

    public static void main(String[] args) {
        int a;
        BufferReader br=new BufferReader(new InputStreamReader(System.in));
        int n = br.parseInt();
        for(a = 0; a < n; a++){
            int x = br.parseInt();
            int y = br.parseInt();
        }
    }
}