#include <iostream>
using namespace std;
int main()
{
    int i, j, n = 5;
    double mas[5];
    for (i = 0; i < n; i++)
    {
        cin >> mas[i];
    }
    for (int i = 0; i < n - 1; i++)
        if (mas[i] == mas[i + 1])
        {
            int sch = 1;
            while (mas[i + sch] == mas[i]) sch++;
            for (int j = i; j < n - 1; j++)
                mas[j] = mas[j + sch];
            n -= sch;

        }
    for (i = 0; i < n; i++)
    {
        cout << mas[i] << "\t";
    }

    //system("pause");
}