#include <bits/stdc++.h>
using namespace std;
int a[10000005];
int main()
{
	long long n;
	long long mx=-200000000,mi=200000000;
	int ans=0;
	cin>>n;
	for(long long i=1;i<=n;i++)
	{
		int x;
		cin>>x;
		if(x>mx) mx=x;
		if(x<mi) mi=x;
	}
	ans=(long long)mx+(long long)mi;
	cout<<ans;
	return 0;
}