Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:17:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<L[nod].size();++j) ^ user.cpp:27:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<L[nod].size();++j) ^ user.cpp:32:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j<L[nod].size()-1) Pos[nod][j+3]=l; ^