import java.util.Scanner;

public class LocateCenter {

    static int x_center = -1;

    static int y_center = -1;



    private static void solveLocateCenter(int [] sites_x, int [] sites_y) {

        /* ------------------- INSERT CODE HERE ---------------------
         *
         * After finding the location of the mining center, assign it to the variables
         * x_center and y_center.
         *
         * */


        /* -------------------- END OF INSERTION --------------------*/
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int numCases = sc.nextInt();

        for(int i = 0; i < numCases; i++) 
        {
            int numberOfSites = sc.nextInt();

            int [] sites_x = new int[numberOfSites];

            int [] sites_y = new int[numberOfSites];

            for(int j = 0; j < numberOfSites; j++) {
                sites_x[j] = sc.nextInt();
                sites_y[j] = sc.nextInt();
            }

            solveLocateCenter(sites_x, sites_y);
            System.out.println("LOCATION " + x_center + " " + y_center);
        }
    }
}