UVA Problem ID 11364 (Parking)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Main {
	public static void main (String args[]) throws IOException
	{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		StringBuilder sb=new StringBuilder(1000);
		int testcases=Integer.parseInt(br.readLine().trim());
		for(int i=0;imax)
				{
					max=Integer.parseInt(s[j]);
				}
				if(Integer.parseInt(s[j])