OJ Board

It's closer to being correct. There are a few things.
Don't use double since it's unnecessary. Think Gauss-sums..

I think your problem might be precision... Consider the following lines from your program..

a=e/6.11;
a=log(a)/log(2.718281828);

First, since log is the natural logarithm, log(exp(x))=x.. Second there actually is a way to totally avoid log...

It's kind of hard to answer when I can't see your code.....

Read the roject statement carefully...

It says, approximately "if a student signs up for two different courses, he participates in neither", but a student might be listed twice on a project but then he only counts once...

And a little hint: Use sets...

Why do you use 0<=t<=180.. Every polygon you get by rotating beyond 90 degrees is just a reflection of one you've already seen....

To klopyrev.. My approach is almost exactly the same as yours, and I got AC in 0.078, so you're record might stand for a while...

Thanks mate...

It seems to be a precision issue, caused by the binary search...

I still get WA on this one....

I lean towards a precision error, but there might be a hidden bug somewhere.

Here is my code..

What a mindnumbingly stupid mistake...

I agree... Thanks

Is it just me or is the answer for the second test input not optimal....

My binary search gives a radius of 6.036325 - not 5 as the statement says - and that gives a volume of 1144.709. I have checked whether this cylinder is legal and it seems so...

Is it a quirk in the problem statement i got ...