#include <iostream>
using namespace std;

void relax(int& a, int& b) {
    if (a > b) b = a;
}
int main() {
    int n;
    cout << "Enter size of array: ";
    cin>> n;
    int* a = new int[n];
    cout<< "Enter your array: "<<endl;
    for (int i = 0; i < n; ++i)

        cin >> a[i];

    int mx = 0;
    for (int i = 0; i < n; ++i) {
        if (i % 2) relax(a[i], mx);
    }
    cout<<  "max = "<< mx<< endl;
    return 0;
}