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import java.util.*;
public class Main
{
	public static void main(String[] args) {
	    Scanner sc = new Scanner(System.in);
	    int a = 4;
	    int vnos;
	    System.out.print("Vnesi stevilo: ");
	    vnos = sc.nextInt();
	    do{
	        if (a % 2 == 0)
	            System.out.println(a);
	        a++;
	    }while(a < (vnos + 1));
	    
	}
}