Compilare: user.cpp: In function ‘void dfs(int, int, edge)’: user.cpp:35:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[curr].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:57:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<E.size(); i++) { ^ user.cpp:86:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v[toDelete.a].size(); j++) ^ user.cpp:92:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v[toDelete.b].size(); j++) ^