Read the task carefully: "more then P% conductors and less then Q%", not equal!!
And don't use something like this:
i * q > (int)(i * q)
instead, use
i * q - (int)(i * q) > epsilon
where
double epsilon = 1e-7;

Thanks a lot!!

Thank you very much! But why we must use double epsilon = 1e-7; and i*Q-int(i*Q)>epsilon?
Can you tell me it?