#include <iostream>
using namespace std;

int main()
{
    char znak;
    int b = 0;
    int a = 0;
    int j = 0;
    int t = 0;

    cout << "Wprowadz 4 dowolne znaki:" << endl;
    while (b < 1 || a < 1 || j < 1 || t < 1)
    {

        cin >> znak;

        if (znak == 'b') b++;
        if (znak == 'a') a++;
        if (znak == 'j') j++;
        if (znak == 't') t++;

        cout << endl;
    }
    cout << " da sie";

    system("pause");



}