ol_4_12

#include <iostream>
#include <fstream>

using namespace std;

int main()
{

    ifstream cin("input.txt");

    short n;
    cin>>n;
    long c[n];

    long mx=-1000000, mx2=-1000001;
    for (short i = 0; i<n; i++)
    {
        cin>>c[i];
        mx = max(c[i], mx);
    }

    bool f = false;
    for (short i = 0; i<n; i++)
        if (c[i]== mx)
            if(!f)
                f = true;
            else
                mx2 = max(c[i], mx2);
        else
            mx2 = max(c[i], mx2);
    cout<<mx2;

}