if the input is 5 10,whats the answer?
if there is no solutions to the input,how to do with it?

> if the input is 5 10,whats the answer?
0.67
> if there is no solutions to the input,how to do with it?
there will always be a solution!

Thanks,I've got AC.
But there is a strange wrong in my prog:
I calculate this expression in my delphi compiler:
    (4/3+1)*2-14/3
the result was 4.337e-19.But it should be zero.
can you tell me why?