(URI) Distância - Solução

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

class Main  {
    public static void main(String[] args) throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  
        int distancia = leitor(br);
      
        System.out.println((distancia+distancia) + " minutos");
    }
  
    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;  
    }
}