| Submit | All submissions | Best solutions | Back to list |
AMZRCK - Amz Rock |
To many people in many cultures, music is an important part of their way of life.
AmzMohammad is a fan of rock music. and he have n rock tracks (labelled from 1 to n) now he wants to select a playlist.
in his opinion a good playlist is one that have no two successive tracks.
in how many ways?
Input
first line = number of test cases
each testcase in an integer n(number of tracks)
Output
Output number of good playlists he can make.
answer is less than 1000000000. it is the only constraint :)
Example
Input: 2 1 2 Output: 2 3
note: a good play list may consist 0 track :)
note 2: how many Persian rock tracks we have?
| Added by: | mohammad mahmoodi |
| Date: | 2012-08-01 |
| Time limit: | 0.100s-1s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: ASM64 GAWK BASH CSHARP GO ICON ICK WHITESPACE |
| Resource: | AmzMohammad ( Mohammad Mahmoodi ) |
hide comments
|
|||||||||
|
2013-02-08 14:52:50 me codesta a.k.a w@s!m
can anyone explain first test case ? |
|||||||||
|
2013-01-27 21:07:06 strings
nyc way to put the question !! |
|||||||||
|
2012-11-02 23:22:17 Smithers
Hopefully this should be a bit clearer: A play-list is any (possibly empty) set taken from the n tracks. Re-orderings are considered to be the same play-list. A good play-list is one which does not, for any i, contain both tracks i and i+1. At least, I got AC under those assumptions, so if the meaning is different then it has the same answer. :) The wording in the question was a bit unclear: I first read "a good playlist is one that have no two successive tracks" to mean "a good playlist has at most one track"; notice that the sample input does not dispel this myth! |
|||||||||
|
2012-10-22 01:09:19 David adroy
plzz explain d test cases...plzzz |
|||||||||
|
2012-10-08 19:35:00 termin
plzzzzz give me some more test casee. i got WA, so plzzzz |
|||||||||
|
2012-09-25 02:40:16 Sardar Khan
simple observation !! |
|||||||||
|
2012-09-06 20:06:10 Vikas Kushwaha
geting WA for my solution id 7604510. pls check..is there any special case got ac...correct data type to be selected :D Last edit: 2012-09-09 05:02:19 |
|||||||||
|
2012-08-28 19:12:06 3qu@t!0n
oh! finally got AC :) Last edit: 2013-01-31 20:17:20 |
|||||||||
|
2012-08-23 07:38:48 :D
It's should be rephrased to: "a good play list may be empty." |
|||||||||
RSS