#include <iostream>
#include <vector>
using namespace std;
int main() {
vector<int> num {1, 2, 3, 4, 5};
cout << "Initial Vector: ";
for (const int& i : num) {
cout << i << " ";
}
// change elements at indexes 1 and 4
num.at(1) = 9;
num.at(4) = 7;
cout << "\nUpdated Vector: ";
for (const int& i : num) {
cout << i << " ";
}
return 0;
}