Compilare: main.cpp: In function 'void dfs(int)': main.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vec[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~ main.cpp:24:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(it = M[vec[nod][i]].begin(); it != M[vec[nod][i]].end(); it++) ^~~ main.cpp:26:24: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' M[vec[nod][i]].clear(); ^ main.cpp:36:15: warning: 'cmaxim' may be used uninitialized in this function [-Wmaybe-uninitialized] cmax[nod] = cmaxim; ~~~~~~~~~~^~~~~~~~