This works fine using Java public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    while(sc.hasNextLine()){
         String line = sc.nextLine();
         String [] parts = line.split(";");
         String operation = parts[0];
         String type = parts[1];
         String text = parts[2];

    if(operation.equals("S")){
        String result = split(type, text);
        System.out.println(result);
    } else if(operation.equals("C")){
        String result = combine(type, text);
        System.out.println(result);
    }
}
   sc.close();
}
public static String split(String type, String text){
    StringBuilder result = new StringBuilder();
    for(int i = 0; i < text.length(); i++){
        char c = text.charAt(i);
        if(Character.isUpperCase(c)){
            if(i > 0)
            result.append(" ");
        result.append(Character.toLowerCase(c));   
        } else if( c != '(' && c != ')'){
        result.append(c);
      } 
    } 
    return result.toString();
   }
public static String combine(String type, String text){
    StringBuilder result = new StringBuilder();
    String[] words = text.split(" ");
    for(int i = 0; i< words.length; i++){
        String word = words[i];
        if(i == 0 && !type.equals("C"))
           result.append(word.toLowerCase());
        else {
            result.append(Character.toUpperCase(word.charAt(0)));
            result.append(word.substring(1).toLowerCase());
        }   
    } 
    if(type.equals("M"))
       result.append("()");
    return result.toString();
}