6.2.15

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>

using namespace std;

int main()
{
    int n;
    cin >> n;
    double minim = 100000000000000000;
    double* a = new double[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        if ((a[i] >= 0) && (a[i] < minim)) {
            minim = a[i];
        }
    }
    cout << minim;
    return 0;
}