Compilare: main.cpp: In function 'int main()': main.cpp:44:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | if (ind [r] == nodes [r].size () - 1){ | ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 53 | for(auto [x , y] : edge) | ^