Eroare de compilare: main.cpp: In function 'bool cmp(std::pair<std::pair<int, int>, int>, std::pair<std::pair<int, int>, int>)': main.cpp:21:9: error: 'sqrt' was not declared in this scope 21 | if( sqrt(a.frfr) != sqrt(b.frfr) ) return sqrt(a.frfr) < sqrt(b.frfr); | ^~~~ main.cpp: In function 'int main()': main.cpp:75:5: error: 'sort' was not declared in this scope; did you mean 'short'? 75 | sort(ls.begin(), ls.end(), cmp); | ^~~~ | short Non zero exit status: 1