#include <stdio.h>
struct Postion
{
    int x;
    int y;
};
int main() 
{
    int ind;
    scanf("%d", &ind); 
    struct Postion points[100];
    for (int i = 0; i < ind; i++)
    {
        scanf("%d %d", &points[i].x, &points[i].y);
        printf("%d ", points[0].x points[2].y
    }                                                                                                
    return 0;
}