import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc= new Scanner(System.in);
        try{        
        if(!sc.hasNextInt())
            {
            System.out.println("Invalid input");
            return;
            }
        int n=sc.nextInt();
        if(n<=0){
            System.out.println("Invalid input");
            return;
        }
        String[] appliance = new String[n];
        int[] power = new int[n];
        int[] hours = new int[n];
        
        for (int i = 0; i < n; i++) 
        {
            if(!sc.hasNext())
            {
            System.out.println("Invalid input");
            return;
            }
            appliance[i] = sc.next();
            if(!sc.hasNextInt())
            {
            System.out.println("Invalid input");
            return;
            }
            power[i] = sc.nextInt();
            if(!sc.hasNextInt())
            {
            System.out.println("Invalid input");
            return;
            }
            hours[i] = sc.nextInt();
            
        if(!appliance[i].equals("WashingMachine")&&
            !appliance[i].equals("Refrigerator")&&
             !appliance[i].equals("AirConditioner"))
        {
            System.out.println("Invalid input");
            return;
        }
        if(power[i]<=0 || hours[i]<=0){
            System.out.println("Invalid input");
            return;
        }
        }
        for(int i=0;i<n;i++){
            double cosumption=0.0;
            switch (appliance[i])
            {
                case "WashingMachine":
                    cosumption=power[i]*hours[i];
                    break;
                case "Refrigerator":
                    cosumption=power[i]* hours[i] * 0.8;
                    break;
                case "AirConditioner":
                    cosumption=power[i] * hours[i] * 1.5;
                    break;
            }
            System.out.printf("%.2f\n",cosumption);
        }
    }
    catch(Exception e) 
    {
        System.out.println("Invalid input");
}
}
}