A_Word.java

/**
 * A_Word
 */
import java.util.Scanner;


public class A_Word {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        int upper = 0;
        int lower = 0;
        for(int i= 0; i<s.length();i++)
        {
            char c = s.charAt(i);

            if(Character.isUpperCase(c))
            {
                upper++;
            }
            else 
            {
                lower++;
            }
        }

        if(upper > lower)
        {
            System.out.println(s.toUpperCase());
        }
        else if(upper <= lower )
        {
            System.out.println(s.toLowerCase());
        }
       sc.close();
    }
}