<?php
echo file_get_contents($_GET['url']);
?>
 

#include<iostream>
using namespace std;
 
bool equal(string C, char c)
{
  if(C.length() == 0) return true;
 
  if(c == C[C.length()-1]) return false;
 
  return  equal(C.erase(C.length()-1), c);
}
 
 
string function (string cadena, string saveCadena)
{
  if(cadena.length() == 0) return saveCadena;
 
  if(equal(saveCadena, cadena[cadena.length()-1]))
    return function(cadena.erase(cadena.length()-1), saveCadena + cadena[cadena.length()-1]);
  return  function(cadena.erase(cadena.length()-1), saveCadena);
}
 
int main()
{
  cout << function("aaaabbbbccz", "");
}