[UVA][遞迴] 11291 - Smeech
Problem B: Smeech
Professor Octastichs has invented a new programming language, Smeech.
An expression in Smeech may be a positive or negative integer, or
may be of the form
(p e1 e2)
where p is a real number between 0 and 1 (inclusive) and
e1 and e2 are Smeech ex...
