Compilare: user.cpp: In function ‘void dfs(int, int, int)’: user.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < graf[nod].size(); ++ i){ ^ user.cpp: In function ‘int main()’: user.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < cc.size(); ++ i){ ^ user.cpp:69:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cc[i].size(); ++ j){ ^