#include <iostream>
#include <fstream>
#include <vector>
using namespace std;

ifstream f("rmq.in");
ofstream g("rmq.out");

#define NMax 100005
#define LMax 19
int main()
{
    auto rmq = new int[NMax][LMax];
    vector<int> v;
    int n,x;
    f >> n;
    for(int i = 0; i< n; i++){
        f >> x;
        v.push_back(x);
    }
    for(int i =0; i<  100001; i++){
        for(int j = 0; j< 18; j++){
            rmq[i][j] = 1000000;
        }
    }
    for(int i = 0; i< n; i++){
        rmq[i][0] = v[i];
    }
    int range = 2;
    for(int j = 1; range <= n; j++, range*=2){
        for(int i = 0; i< n; i++){
            cout<< i << " " <<rmq[i][j-1] << " " <<rmq[i+range/2][j-1] <<endl;
            rmq[i][j] = min(rmq[i][j-1], rmq[i+range/2][j-1]);
        }
    }
    cout << rmq[0][2];
    return 0;
}