import java.util.stream.Collectors;
import java.util.Random;
import java.util.SortedSet;
import java.util.TreeSet;

class Teste {
    private static final Random RND = new Random();

    private static String comZero(int x) {
        return (x < 10 ? "0" : "") + x;
    }

    private static String sortear() {
        SortedSet<Integer> numberset = new TreeSet<>();
        while (numberset.size() < 6) {
            numberset.add((RND.nextInt(60) + 1));
        }
        return numberset.stream().map(Teste::comZero).collect(Collectors.toList()).toString();
    }

    public static void main(String[] args) {
        System.out.println(sortear());
    }
}