import java.io.*;
public class Mobiilihinnad{
  public static void main(String[] arg) throws IOException{
     double rlesumma=0;
     BufferedReader sisse=new BufferedReader(
        new InputStreamReader(System.in)
     );
//     System.out.println("Palun andmed:");
     String tekst=sisse.readLine();
     while(tekst.length()>0){
       int tyhik=tekst.indexOf(" ");
       String firma=tekst.substring(0, tyhik);
       double makse=Double.parseDouble(tekst.substring(tyhik+1));
       if(firma.toLowerCase().equals("rle")){rlesumma+=makse;}
//       System.out.println("Palun andmed:");
       tekst=sisse.readLine();       
     }
     System.out.println("Kokku RLE: "+rlesumma);
  }
}