Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:12:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < w[nod].size(); i++){ ^ user.cpp: In function ‘int cupleaza(int)’: user.cpp:23:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++){ ^ user.cpp:32:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++){ ^