#include <iostream>
using namespace std;

int a[10] = { 1,2,3,4,5,6,7,8,9,0 };
int b[10] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
int c[10];
int i, j, k;


int main()
{
    for (k = 0; k < 10; k++) {
        if (k % 2 == 0)
            for (i = 0; i < 10; i++)
                if (i % 2 == 1)
                    c[k] = a[i];
    }

    for (k = 0; k < 10; k++) {
        if (k % 2 == 1)
            for (j = 0; j < 10; j++)
                if (j % 2 == 0)
                    c[k] = b[j];
    }

    for (i = 0; i < 10; i++)
        cout << a[i] << endl;
    cout << "\n";
    for (j = 0; j < 10; j++)
        cout << b[j] << endl;
    cout << "\n";
    for (k = 0; k < 10; k++)
        cout << c[k]<<endl;
    system("pause");
    return 0;
}