OJ Board

Try this:

input
0 0.35

output
7/20

....And another assumption: Since one input block ends with an empty line and the prob is multiple input - one can easily guess two blank lines append each input block. But it's not right - only one blank line. Tricky, isn't it?

Should Try for j = 0. When the denominator is a multiple of 2 and/or 5 only!

The judge input is really very annoying. I got accepted after making a lot of assumptions. Like this is valid input:

E
A B
C E
DB
E C

Yes, a lot of spaces may appear in input!!
Hope it can help.

Let myself answer my own Question - `Volume Can't be negative'!!!

Could anyone pls tell me what is the problem with prob10215 - largest/smallest boxes..

It seems to be a straightforward problem to find maxima/minima of the volume expression. But I'm getting a WA.

You may try PI = 2.0*acos(0.0);