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import java.util.*; public class Main { static boolean isZero(String s) { for (int i=s.length()-1; i>=0; i--) { if (s.charAt(i)!=48) return false; } //if (Integer.parseInt(s)!=0) return false; //if (s.length()==1 && s.charAt(0)==48) return true; return false; } public static void main(Strin...

Thank you chunyi81.

Thanks a lot Darko.

I still wonder normally how people input an integer/double/string in this situation? We even need to write a small routine, just for input?

Hi all, Today I tried to submit answers to Columbus weekend Contest #4, but could not pass the "compile error". Even when I did not include any external libraries. The judges still returned me "Compile error". Here's my code: class Main { static String readLine() throws Exception...

I guess it's because of this line:
BufferedReader br = new BufferedReader (new InputStreamReader (System.in));