/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	Scanner s = new Scanner(System.in);
        int wynik = 0;
        int liczba;
        int poprzednia = 42;
        while (s.hasNext()) {
            liczba = s.nextInt();
            System.out.println(liczba);
            if (liczba != 42) {
                poprzednia = liczba;
            } else if (liczba == 42 && poprzednia != 42) {
                wynik += 1;
                if (wynik == 3) {
                    System.exit(0);
                }
            }
        }
    }
}

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NDIKNDIKMTIKMTMKNDIKMTEKNDIKNDMKNDIKNDIKOTkKMDE=

42
42
12
13
42
11
42
43
42
42
99
01