26

#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{
    int N[10] = {1, 127, 1237, 12347, 12345, 123456, 1234567, 1234567, 123456, 1234};

    for (int i = 0; i < 10; i++)
    {
        bool ok = true;

        if ((N[i] % 10 == 4 || N[i] % 10 == 7) || (N[i] % 100 / 10 == 4 || N[i] % 100 / 10 == 7) || (N[i] % 1000 / 100 == 4 || N[i] % 1000 / 100 == 7) || (N[i] % 10000 / 1000 == 4 || N[i] % 10000 / 1000 == 7) || (N[i] % 100000 / 10000 == 4 || N[i] % 100000 / 10000 == 7) || (N[i] % 1000000 / 100000 == 4 || N[i] % 1000000 / 100000 == 7))
        {
            ok = false;
        }

        if (ok)
        {
            cout << N[i] << " ";
        }
    }
}