Task 1

#include <iostream>

using namespace std;

int main()
{
    const int sizeA = 5;
    const int sizeB = 5;
    const int sizeC = sizeA + sizeB;
    int arrA[sizeA] = {10, 8, 6, 4, 2};
    int arrB[sizeB] = {9, 7, 5, 3, 1};
    int arrC[sizeC];
    int indexA = 0;
    int indexB = 0;
    for (int index = sizeC - 1; index >= 0; index--) {
        if (((arrA[indexA] > arrB[indexB]) && (indexA < sizeA && indexB < sizeB)) || (indexB >= sizeB && indexA < sizeA))  {
            arrC[index] = arrA[indexA++];
        } else {
            arrC[index] = arrB[indexB++];
        }
    }
    for (int i = 0; i < sizeC; i++) {
        cout << arrC[i] << " ";
    }
}