Compilare: main.cpp: In function 'void dfs(int)': main.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0; i < graf[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfsInv(int)': main.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (int i = 0; i < grafInv[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:102:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for (int j = 0; j < graf[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~