Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:23:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[s].size();i++) if(!viz[v[s].at(i)]) DFS(v[s].at(i)); ^ user.cpp: In function ‘void suma()’: user.cpp:35:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[crt].size();i++) if(nrord[crt]>nrord[v[crt].at(i)]) ^ user.cpp: In function ‘void taie(int, int, int, int, int, int)’: user.cpp:63:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) ^ user.cpp:80:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) ^ user.cpp:97:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) ^ user.cpp: In function ‘void solve()’: user.cpp:124:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) if(nrord[s]>nrord[v[s].at(j)]) cd.push(v[s].at(j)); ^ user.cpp:145:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[s].size();j++) if(nrord[s]>nrord[v[s].at(j)] && v[s].at(j)!=nod1) cd.push(v[s].at(j)); ^