(SPOJ) 19990 - Compra de Dadinhos - Solução

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 total = 1;
       
        int valor1 = leitor(br);
        int valor2 = leitor(br);
        int valor3 = leitor(br);
       
        while (valor1 != 0 && valor2 != 0 && valor3 != 0) {
            total = valor1 * valor2 * valor3;
           
            bw.write(total + "\n");
           
            valor1 = leitor(br);
            valor2 = leitor(br);
            valor3 = leitor(br);   
        }
                              
        bw.flush();
        bw.close();           
        return;
    }
}