#include <iostream>
#include<iomanip>
#include<cmath>
using namespace std;
int main() {
int a[100];
int n,max,min,max2,min2,count=0;
char m;
cin>>n;
for(int i=0;i<n;i++){
cin>>m;
a[i] = (int)m;
if(i==0){
max = a[i];
min = a[i];
}else{
if(a[i]>max){
max = a[i];
}
if(a[i]<min){
min = a[i];
}
}
}
for(int i=0;i<n;i++){
if(a[i]!=max&& a[i]!=min){
if(count==0){
max2 = a[i];
min2 = a[i];
}else{
if(a[i]>max2){
max2 = a[i];
}
if(a[i]<min2){
min2 = a[i];
}
}
count++;
}
}
cout << (char)max2 <<" "<< (char)min2;
return 0;
}