Eroare de compilare: In file included from /usr/include/c++/4.4/bits/stl_algobase.h:67, from /usr/include/c++/4.4/algorithm:61, from user.cpp:1: /usr/include/c++/4.4/bits/stl_iterator_base_types.h: In instantiation of ‘std::iterator_traits<std::pair<int, int> >’: user.cpp:38: instantiated from here /usr/include/c++/4.4/bits/stl_iterator_base_types.h:127: error: no type named ‘iterator_category’ in ‘struct std::pair<int, int>’ /usr/include/c++/4.4/bits/stl_iterator_base_types.h:128: error: no type named ‘value_type’ in ‘struct std::pair<int, int>’ /usr/include/c++/4.4/bits/stl_iterator_base_types.h:129: error: no type named ‘difference_type’ in ‘struct std::pair<int, int>’ /usr/include/c++/4.4/bits/stl_iterator_base_types.h:130: error: no type named ‘pointer’ in ‘struct std::pair<int, int>’ /usr/include/c++/4.4/bits/stl_iterator_base_types.h:131: error: no type named ‘reference’ in ‘struct std::pair<int, int>’ user.cpp: In function ‘int main()’: user.cpp:25: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:26: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result