Compilare: user.cpp: In function ‘int dynamic(int, int, int)’: user.cpp:12:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++){ ^ user.cpp:10:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,s=0; ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:30:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) if(v[nod][i]!=pre) dfs(v[nod][i],nod); ^ user.cpp:29:22: warning: unused variable ‘j’ [-Wunused-variable] ap[nod]=1; int i,j,k; ^ user.cpp:29:24: warning: unused variable ‘k’ [-Wunused-variable] ap[nod]=1; int i,j,k; ^ user.cpp: In function ‘int main()’: user.cpp:33:15: warning: unused variable ‘j’ [-Wunused-variable] int a,b,i,j; ^