In file included from /usr/include/c++/4.4/unordered_map:35, from megascoala.cpp:6: /usr/include/c++/4.4/c++0x_warning.h:31:2: error: #error This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options. megascoala.cpp:14: error: '>>' should be '> >' within a nested template argument list megascoala.cpp:15: error: 'unordered_map' was not declared in this scope megascoala.cpp:15: error: template argument 1 is invalid megascoala.cpp:15: error: template argument 2 is invalid megascoala.cpp: In function 'void dijkstra(int)': megascoala.cpp:21: warning: 'auto' will change meaning in C++0x; please remove it megascoala.cpp:21: error: expected initializer before ':' token megascoala.cpp:60: error: expected primary-expression at end of input megascoala.cpp:60: error: expected ';' at end of input megascoala.cpp:60: error: expected primary-expression at end of input megascoala.cpp:60: error: expected ')' at end of input megascoala.cpp:60: error: expected statement at end of input megascoala.cpp:60: error: expected '}' at end of input