#include <iostream>
using namespace std;

int main() {
	int n, p;
	cin>>p;
	int min = 100;
	int max = -100;
	for (int i = 0; i < p; i++){
		cin>>n;
		if(n < min){
			min = n;
		}
		if(n > max){
			max = n;
		}
	}
	cout<<min + max;
	return 0;
}