(SPOJ) 3830 - Soma - 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;
        int sinal = 1;
        while (true) {
            n = br.read();
            if (n >= '0' && n <= '9') break;
            if (n == '-') sinal = -1;
            if (n == '+') sinal = 1;
        }
        while (true) {
            resp = resp*10 + n-'0';
            n = br.read();
            if (n < '0' || n > '9') break;
        }
      //  System.out.println(resp*sinal);
        return resp*sinal;
    }
  
    void processa() throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int qteNumeros = leitor(br);
       
        int soma = 0; 
        for (int i = 0; i < qteNumeros; i++) {
            soma += leitor(br);
        }  
      
        System.out.println(soma);
                                  
        return;
    }
}