(SPOJ) 812 - Bits Trocados - Solução 2

import java.io.*;
import java.util.*;

class Main {
    public static void main(String[] args) throws NumberFormatException, IOException {
        Main processando = new Main();
        processando.processa();
       
        System.exit(0);
    }
   
    static int leitor(BufferedReader br) throws NumberFormatException, IOException {
        int n;
        int resp = 0;

        while (true) {
            n = br.read();
            if (n >= '0' && n <= '9')
                break;
        }
        while (true) {
            resp = resp*10 + n-'0';
            n = br.read();
            if (n < '0' || n > '9')
                break;
        }

        return resp;
    }
   
    void processa() throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
       
        int valor = 0;
        int contador = 0;
        while ((valor = leitor(br)) != 0) {
            contador++;
            bw.write("Teste " + contador + "\n");
           
            int i = 0;
            int j = 0;
            int k = 0;
            int l = 0;
            while (valor > 0) {
                if (valor >= 50) {
                    i++;
                    valor -= 50;
                }
                else if (valor >= 10) {
                    j++;
                    valor -= 10;
                }
                else if (valor >= 5) {
                    k++;
                    valor -= 5;
                }
                else if (valor >= 1) {
                    l++;
                    valor -= 1;
                }
            }

            bw.write(i + " " + j + " " + k + " " + l + "\n\n");
           
        }                            
                
        bw.flush();
        bw.close();
        return;
    }
}