//  {

   {

 //    typedef PairingHeap<Prio, ItemIntMap> IntHeap;

     typedef PairingHeap<Prio, ItemIntMap> IntHeap;

 //    checkConcept<Heap<Prio, ItemIntMap>, IntHeap>();

     checkConcept<Heap<Prio, ItemIntMap>, IntHeap>();

 //    heapSortTest<IntHeap>();

     heapSortTest<IntHeap>();

 //    heapIncreaseTest<IntHeap>();

     heapIncreaseTest<IntHeap>();

 //

 //    typedef PairingHeap<Prio, IntNodeMap > NodeHeap;

     typedef PairingHeap<Prio, IntNodeMap > NodeHeap;

 //    checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>();

     checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>();

 //    dijkstraHeapTest<NodeHeap>(digraph, length, source);

     dijkstraHeapTest<NodeHeap>(digraph, length, source);

 //  }

   }