Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:24:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:71:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < w[ c[b] ].size(); j++){ ^ user.cpp:77:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < w[ c[b] ].size(); j++){ ^