Eroare de compilare: In file included from /usr/include/c++/4.4/unordered_set:35, from user.cpp:3: /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:14: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp: In function ‘int main()’: user.cpp:27: error: ‘v’ was not declared in this scope user.cpp:28: error: ‘v1’ was not declared in this scope user.cpp:32: error: ‘v’ was not declared in this scope user.cpp:34: error: ‘v’ was not declared in this scope user.cpp:38: error: ‘v1’ was not declared in this scope user.cpp:40: error: ‘v1’ was not declared in this scope user.cpp:50: error: ‘v’ was not declared in this scope user.cpp:56: error: ‘unordered_set’ was not declared in this scope user.cpp:56: error: expected primary-expression before ‘int’ user.cpp:56: error: expected ‘;’ before ‘int’ user.cpp:56: error: ‘it’ was not declared in this scope user.cpp:57: error: ‘v1’ was not declared in this scope user.cpp:66: error: ‘unordered_set’ was not declared in this scope user.cpp:66: error: expected primary-expression before ‘int’ user.cpp:66: error: expected ‘;’ before ‘int’ user.cpp:66: error: ‘it’ was not declared in this scope user.cpp:66: error: ‘v1’ was not declared in this scope