#include<bits/stdc++.h> using namespace std; int a[100],n,b[100],i,x,y=999999999; int main(){ cin>>n; for(i=0;i<n;i++){ cin>>a[i]>>b[i]; if(y>a[i]){ y=a[i]; } if(x<b[i]){ x=b[i]; } } cout<<'['<<x<<','<<y<<']'; return 0; }