#include <array>
#include <iostream>
#include <string.h>
using namespace std;

int main()
{
    int num = 0;
    cout << num << "\n"; // 0
    num++;
    cout << num << "\n"; // 1
    num++;
    cout << num << "\n"; // 2
    num++;
    cout << num << "\n"; // 3
    num++;
    cout << num << "\n"; // 4
    num++;
    cout << num << "\n"; // 5
    
    for (int i = 0; i < 6; i++)
    {
        cout << i << "\n"; // 0
    }
    
    int nums[4] = {100, 200, 300, 400};
    cout << nums[0] << "\n";
    cout << nums[1] << "\n";
    cout << nums[2] << "\n";
    cout << nums[3] << "\n";
    
    for (int index = 0; index < 4; index++)
    {
        cout << nums[index] << "\n"; // 0
    }
    return 0;
}