Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:93: error: redeclaration of ‘std::_Rb_tree_const_iterator<int> it’ user.cpp:83: error: ‘std::_Rb_tree_const_iterator<int> it’ previously declared here user.cpp:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result