ONP - Transform the Expression


Transform the algebraic expression with brackets into RPN form (Reverse Polish Notation). Two-argument operators: +, -, *, /, ^ (priority from the lowest to the highest), brackets ( ). Operands: only letters: a,b,...,z. Assume that there is only one RPN form (no expressions like a*b*c).

Input

t [the number of expressions <= 100]
expression [length <= 400]
[other expressions]

Text grouped in [ ] does not appear in the input file.

Output

The expressions in RPN form, one per line.

Example

Input:
3
(a+(b*c))
((a+b)*(z+x))
((a+t)*((b+(a+c))^(c+d)))

Output:
abc*+
ab+zx+*
at+bac++cd+^*

hide comments
nrl 7: 2014-10-02 10:10:47

It seems all the test cases have brackets. Hence you can keep priority of + and - same or different, it wont matter.

Gaurav Ahirwar: 2014-08-22 08:53:47

Xtremely Simple logic! ..just give it a try! :)

Emanuele Paolini: 2014-08-21 14:57:49

I think that for clarification the expression a-b+c-d should be added to the examples. Priority of operators is not shown in any example.

Shatha Abu Hashem: 2014-01-28 10:02:35

Ugh .. I Just cannot find the algorithm .. it drives me crazy

Bowen: 2013-12-25 17:54:00

"+, -, *, /, ^ (priority from the lowest to the highest)"
does - have higher precedence than + or are they the same? also with * and /?

Duan Yichao: 2013-12-12 07:55:21

Write some more expressions yourself and try.

Mayank Raj: 2013-08-28 19:54:59

Actually everything is bracketed...I coded to look only for the braces!!

Franz Matejka: 2013-08-06 08:24:01

Suggestion: Add to problem statement that the algorithm just needs to work with fully bracketed expressions.

(Tjandra Satria Gunawan)(曾毅昆): 2013-07-09 18:19:53

0.05s in Brainf**k ;-)


Added by:mima
Date:2004-05-01
Time limit:5s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6 VB.NET
Resource:-

Problem's scores 1 vote

Concept difficulty
Concept difficulty 23%
Implementation difficulty
Implementation difficulty 24%
264 7