Compilare: main.cpp: In function 'int main()': main.cpp:38:31: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 38 | if (nodes [r].size () == ind [r]){ | ~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:45:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | if (ind [r] == nodes [r].size () - 1){ | ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:56:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 56 | for(auto [x , y] : edge) | ^