title: Traveling salesman example with known global optimum
body: <p>I made a memetic algorithm in Python for <a href="http://en.wikipedia.org/wiki/Travelling_salesman_problem" rel="nofollow noreferrer">traveling salesman problem</a>.
  However, all the test data (list of distances between cities) I've encountered lack the information of the best solution, so I can't know how close to global optimum my algorithm gets.</p>
  
  <p>Does anyone know where I can find some tsp test data (preferably in matrix form, but anything's good) with known best solution?</p>