#include <iostream>
int main() {
int n;
std::cout << "Enter the number of elements in the array: ";
std::cin >> n;
int arr[n];
std::cout << "Enter the elements of the array: ";
for(int i = 0; i < n; i++) {
std::cin >> arr[i];
}
int sum = 0, count = 0;
for(int i = 1; i < n; i += 2) {
sum += arr[i];
count++;
}
if(count == 0) {
std::cout << "No elements with even indexes in the array";
} else {
float average = static_cast<float>(sum) / count;
std::cout << "Average of elements with even indexes: " << average;
}
return 0;
}