title: C++ large array of vectors
body: <p>I'm having some troubles with a large array of vectors in C++. 
  Basicaly I wan't an array of 2 millions elements, and each elements is a <code>vector&lt;int&gt;</code> (It's for building an adjacency list).</p>
  
  <p>So when I do <code>vector&lt;int&gt; myList[10]</code> it works great, but when i do <code>vector&lt;int&gt; myList[2000000]</code> it does not work and I don't know why.</p>
  
  <p>I tried to do <code>unsigned long int var = 2000000; vector&lt;int&gt; myList[var];</code> but still the same error. (I don't know what is the error, my program just crash)</p>
  
  <p>If you have any idea,</p>
  
  <p>Thanks </p>