Compilare: main.cpp: In function 'void topologica()': main.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int j=0; j<v[nod].size(); ++j) | ~^~~~~~~~~~~~~~ main.cpp:44:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int j=0; j<v[rad].size(); ++j) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void df(int)': main.cpp:60:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int i=0; i<v[nod].size(); ++i) | ~^~~~~~~~~~~~~~ main.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(int i=0; i<v[nod].size(); ++i) | ~^~~~~~~~~~~~~~ main.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int i=0; i<v[nod].size(); ++i) | ~^~~~~~~~~~~~~~