#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
int main()
{
    const int size = 20;
    int array[size];
    int i, j;
    srand((unsigned) time(0));
    int count = 0;

    for ( i = 0; i < size; i++)
        array[i] = rand() % 20;

    for ( i = 0; i < size; i++)
        cout << array[i] << " ";
    cout << endl;

    for ( i = 0; i < size; i++)
    {
        int temp = array[i];

        for ( j = 0; j < size; j++)
            if(temp == array[j])
                count++;
        if(count == 1)
            cout << temp << " ";
        count = 0;
    }
    cout << endl;
}