import java.util.*;
public class Metode9{
	static String novNiz(String niz){
		String besede[] = niz.split(" ");
		for (int i = 0; i<besede.length; i++){
			if (besede[i].length() % 2 == 0)
				besede[i] = besede[i].toLowerCase();
			else
				besede[i] = besede[i].toUpperCase();
		}
		
		return String.join(" ", besede);
	}
	
	public static void main(String[]args){
		Scanner sc = new Scanner(System.in);
		System.out.println("Vnesi niz;");
		String niz = sc.nextLine();
		System.out.println("Spremenjen niz: "+novNiz(niz));
	}
}