#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,a[100010],ans,ma=-0x3f3f3f3f,mi=0x3f3f3f3f;
signed main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		mi=min(mi,a[i]);
		ma=max(ma,a[i]);
	}
	cout<<mi+ma;
	return 0;
}