UVa Problem ID 11727 (Cost Cutting)

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));
        StringBuffer sb=new StringBuffer("");
       
        int t=Integer.parseInt(br.readLine());
        if(t>20)
        	System.exit(0);
        for (int i = 0; i 10000 || b<1000 || b>10000 || c<1000 || c>10000 || a==b || a==c || b==c)
        		break;
        	int middle=a;
        	if((a