package Aula04;
import java.util.Scanner;


public class Ex3 {
   
public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Write your string ");
        String str= sc.nextLine();
        String[] split = str.split(" ");
        for (int i=0; i <= (split.length-1); i++){
            if (split[i].length()>3)
                System.out.print(split[i].substring(0,1).toUpperCase());
         }
            


    }
}