View Code of Problem 96

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        while (scanner.hasNext()){
            String s=scanner.nextLine();
            StringBuilder num=new StringBuilder();
            for(char c:s.toCharArray()){
                if(c>='0'&&c<='9'){
                    num.append(c);
                }
                else{
                    break;
                }
            }
            int i= Integer.parseInt(num.toString());
            if(i==0){
                break;
            }
            long ans=0;
            switch (s.substring(num.length())){
                case "B":
                    ans=i;
                    break;
                case "KB":
                    ans= (long) (i*(Math.pow(1024,1)-Math.pow(1000,1)));
                    break;
                case "MB":
                    ans= (long) (i*(Math.pow(1024,2)-Math.pow(1000,2)));
                    break;
                case "GB":
                    ans= (long) (i*(Math.pow(1024,3)-Math.pow(1000,3)));
                    break;
                case "TB":
                    ans= (long) (i*(Math.pow(1024,4)-Math.pow(1000,4)));
                    break;
            }
            System.out.println(ans);
        }
    }
}