Eroare de compilare: main.cpp:11:19: error: 'std::set<int> index' redeclared as different kind of entity 11 | set <int> m[MAX], index; | ^~~~~ In file included from /usr/include/string.h:432, from /usr/include/c++/10/cstring:42, from main.cpp:2: /usr/include/strings.h:61:1: note: previous declaration 'const char* index(const char*, int)' 61 | index (const char *__s, int __c) __THROW | ^~~~~ main.cpp: In function 'int main()': main.cpp:23:15: error: overloaded function with no contextual type information 23 | index.insert(x); | ^~~~~~ main.cpp:26:20: error: unable to deduce 'auto&&' from 'index' 26 | for (int ind : index) | ^~~~~ main.cpp:26:20: note: couldn't deduce template parameter 'auto' Non zero exit status: 1