#include<bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    scanf("%d",&n);
    int min_left=1000000000,max_right=-1000000000;
    int a,b;
    for(int i=0;i<n;i++){
        scanf("%d %d", &a, &b);
        if(a<min_left) min_left=a;
        if(b>max_right) max_right=b;
    }
    int flag=1;
    for(int i=0;i<n;i++){
        scanf("%d %d", &a, &b);
        if(a>max_right || b<min_left){
            flag=0;
            break;
        }
    }
    if(flag){
        printf("%d %d\n", min_left,max_right);
    }else{
        printf("no\n");
    }
return 0;
}