Compilare: main.cpp: In function 'void dfs(int)': main.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for (int i = 0; i < g[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int i = 0; i < sort_topologica.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~