Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:13:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<graf[nod].size(); i++) dfs(graf[nod][i]); ^ user.cpp:15:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<graf[nod].size(); i++) if (MAX[graf[nod][i]]>0) add+=MAX[graf[nod][i]]; ^