Compilare: user.cpp: In function ‘int ver(int)’: user.cpp:14:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[inc].size()==1&&v[inc][0]==nod||v[sf].size()==1&&v[sf][0]==nod) ^ user.cpp:17:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:18:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[v[nod][i]].size();j++) ^ user.cpp:19:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<v[v[v[nod][i]][j]].size();k++) ^ user.cpp:20:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(kk=0;kk<v[nod].size();kk++) ^ user.cpp: In function ‘int main()’: user.cpp:42:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:58:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^