import java.util.*;

public class Task061025 {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>(Arrays.asList(1, 2, 3));
        
        for (Integer num : list) {
            if (num == 3) {
                list.remove(num);
            }
        }
        
        System.out.println(list);
    }
}