Compilare: main.cpp: In function 'void dfs(int)': main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < v[node].size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:57:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i = 0; i < topo.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:58:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int j = 0; j < v[topo[i]].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~