#include <stdio.h>

int main(){
    int N,x,y,ind;
    scanf("%d",&N);
    
    int arr1[x], arr2[y];
    for(x=0;x<N;x++){
        for(y=1;y<N;y++){
            scanf("%d %d",arr1[x],arr2[y]);
        }
        printf("\n");
    }
    printf("%d %d",arr1[1],arr2[2]);
    return 0;
}