<map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy"> <area shape="rect" id="node1" href="$a00271.html" title="__gnu_pbds::detail\l::left_child_next_sibling\l_heap\< Value_Type, Cmp_Fn,\l null_type, _Alloc \>" alt="" coords="5,5,195,70"/> <area shape="rect" id="node2" href="$a00286.html" title="__gnu_pbds::detail\l::pairing_heap\< Value\l_Type, Cmp_Fn, _Alloc \>" alt="" coords="243,11,402,63"/> </map>