#include <iostream>

using std::cin;
using std::cout;
using std::endl;

int main()
{
    int SIZE = 4;
    int tenTo100[SIZE];
    int temp = 0;
    int counter = 0;
    int numToDisplay = SIZE;

    for(int x = 0;x <= SIZE;++x)
    {
        cin >> temp;
        while(!(temp >= 10 && temp <= 100)) //checks the range of the temp number.
        {
            cout << "enter a new number between 10 and 100: ";
            cin >> temp;
        }

        if(x == 0)
        {
            tenTo100[counter] = temp;
            ++counter;
        }
        else if(x > 0)
        {
            bool isDup = false;
            for(int y = counter-1; y >= 0; --y)
            {
                if(temp == tenTo100[y])
                {
                    isDup = true;

                }

            }

            if(isDup == false)
            {
                tenTo100[counter] = temp;
                ++counter;
            }

        }

    }//end of the for loop


    cout << endl;

    for(int y = 0; y <= counter-1;++y)
    {
        cout << tenTo100[y];
        cout << endl;
    }

    return 0;
}