ANARC09E  Probability One
Number guessing is a popular game between elementaryschool kids. Teachers encourage pupils to play the game as it enhances their arithmetic skills, logical thinking, and followingup simple procedures. We think that, most probably, you too will master in few minutes. Here’s one example of how you too can play this game: Ask a friend to think of a number, let’s call it n0 . Then:
 Ask your friend to compute n1 = 3 ∗ n0 and to tell you if n1 is even or odd.
 If n1 is even, ask your friend to compute n2 = n1 /2. If, otherwise, n1 was odd then let your friend compute n2 = (n1 + 1)/2.
 Now ask your friend to calculate n3 = 3 ∗ n2 .
 Ask your friend to tell tell you the result of n4 = n3 /9. (n4 is the quotient of the division operation. In computer lingo, ’/’ is the integerdivision operator.)
 Now you can simply reveal the original number by calculating n0 = 2 ∗ n4 if n1 was even, or n0 = 2 ∗ n4 + 1 otherwise.
Here’s an example that you can follow: If n0 = 37, then n1 = 111 which is odd. Now we can calculate n2 = 56, n3 = 168, and n4 = 18, which is what your friend will tell you. Doing the calculation 2 × n4 + 1 = 37 reveals n0 .
Input
Your program will be tested on one or more test cases. Each test case is made of a single positive number (0 < n0 < 1, 000, 000).
The last line of the input file has a single zero (which is not part of the test cases.)
Output
For each test case, print the following line:
k. B Q
Where k is the test case number (starting at one,) B is either ’even’ or ’odd’ (without the quotes) depending on your friend’s answer in step 1. Q is your friend’s answer to step 4.
Example
Input:
37
38
0
Output:
1. odd 18
2. even 19
hide comments
hibernating:
20111202 17:58:12
correctly guessed d method by looking at the test case at frst sight..but the way of output took too many submissions..atlast git AC :) 

tschaitanya:
20100630 11:08:24
Last edit: 20100630 11:09:17 

:(){ :: & };::
20100513 14:10:53


Reborn In Fire...:
20100408 14:52:10
nice problem! 
Added by:  Mohammad Kotb 
Date:  20091128 
Time limit:  0.263s1.596s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 NODEJS OBJC PERL6 SQLITE VB.NET 
Resource:  http://www.icpcanarc.org 