Eroare de compilare: In file included from /usr/include/c++/4.4/unordered_map:35, from user.cpp:4: /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. user.cpp:7: error: ‘tr1’ is not a namespace-name user.cpp:7: error: expected namespace-name before ‘;’ token user.cpp:12: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp:13: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp:14: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp: In function ‘void read()’: user.cpp:22: error: ‘graph’ was not declared in this scope user.cpp: In function ‘void bf()’: user.cpp:35: error: ‘visited’ was not declared in this scope user.cpp:36: error: ‘result’ was not declared in this scope user.cpp:38: error: ‘result’ was not declared in this scope user.cpp:39: error: ‘visited’ was not declared in this scope user.cpp:44: error: ‘graph’ was not declared in this scope