Compilare: user.cpp: In function ‘int main()’: user.cpp:33:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < graph[i].size(); j++) { ~~^~~~~~~~~~~~~~~~~ user.cpp:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < inDegree.size(); i++) ~~^~~~~~~~~~~~~~~~~ user.cpp:53:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[element].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ user.cpp:65:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < topSort.size(); i++) ~~^~~~~~~~~~~~~~~~