#include <iostream>

using namespace std;

int main()
{
    int array_a[] = { 1, 5 };
    int array_b[] = { 2, 3 };

    int size_a = sizeof( array_a ) / sizeof( array_a[0] );
    int size_b = sizeof( array_b ) / sizeof( array_b[0] );
    int total_size = size_a + size_b;

    int united_array[ total_size ];

    for (int i = 0; i < total_size; i++) {
        united_array[i] = (i < size_a ? array_a[i] : array_b[i - size_b]);
    }

    // Print array
    for (int i = 0; i < total_size; i++) {
        cout << united_array[i] << " ";
    }
    return 0;
}