#include <iostream>
using namespace std;
int main()
{
	int max1, max2 ,i;
	int n ;
	int a[n] ;
	cin >> n;
	for (int i = 0; i < n; i++)
	{

		cin >> a[i];
		max1 = a[0];
		if (max1> a[i])
			max1 = a[i];

	}

	for (int i = 0; i < n; i++){
		max2 = a[0];
		if ((max2<max1) && (max2 < a[i]))
			max2 = a[i];

	}
	cout << max2;

  }