Compilare: main.cpp: In function 'int main()': main.cpp:22:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 22 | auto [c, u] = pq.top(); | ^ main.cpp:35:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for(int i = 0; i < s[k].length(); i++) | ~~^~~~~~~~~~~~~~~