Compilare: user.cpp: In function ‘void constr(std::vector<int>, int)’: user.cpp:68:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<4*v.size()+5;i++) ~^~~~~~~~~~~~~ user.cpp:70:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ~^~~~~~~~~ user.cpp: In function ‘void calcsiz(int)’: user.cpp:80:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘void DFS(int)’: user.cpp:98:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp:111:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~