console.time("Tiempo de computo");
var total = 0, unicos = 0, rangos = [], min = 99999999999, max = 0;
function alReves (num) {
  for (var rev = 0;; rev = rev * 10 + (num % 10), num = parseInt(num / 10))
    if (num <= 0) return rev;
}
var lineas = require("fs").readFileSync("seed.txt", "utf-8").toString().split(/\n/);
for (var linea in lineas) {
  var rango = lineas[linea].split(/\s+/)
  if (rango.length < 2) break;
  var ini = Math.min(rango[0], rango[1]), fin = Math.max(rango[0], rango[1]);
  rangos.push([ini, fin]);
  if (min > ini) min = ini;
  if (max < fin) max = fin;
}
rangos.sort();
for (var i = min; i < max; i++) if (i == alReves(i)) {
  ++unicos;
  for (var r in rangos)
    if ((r = rangos[r])[0] > i || r[1] < i) continue;
    else total++;
}
console.timeEnd("Tiempo de computo");
console.log("Palindromos unicos:", unicos);
console.log("Total en rangos:", total);
/*
OS: MacOSX 10.7.5
Processor: 2.3.GHz Intel Core i5
Memory: 8GB 1333 MHz DDR3
Node.JS v0.8.1

[xenomuta@MiniXantina:~/Codigo]$ time node palindromos.js
Tiempo de computo: 377ms
Palindromos unicos: 2638
Total en rangos: 106814

real  0m0.448s
user	0m0.436s
sys	0m0.011s
*/