Compilare: user.cpp: In function ‘int update(int, int)’: user.cpp:22:11: warning: statement has no effect [-Wunused-value] for (x;x<=n;x+=lsb(x)) ^ user.cpp:23:19: warning: no return statement in function returning non-void [-Wreturn-type] v[x]+=val;} ^ user.cpp: In function ‘int query(int)’: user.cpp:28:11: warning: statement has no effect [-Wunused-value] for (x;x>=1;x-=lsb(x)) ^