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CRDS - Cards |
Maricruz have a lot of cards, she always uses her cards to build pyramids as shown in the following image:
A pyramid card of 3 levels. She always wonder how many cards does she need to make a pyramid card of N levels. Your task is to answer that question.
Input
The first line of the input contains an integer 1 <= T <= 1,000. Each of the following T lines will have an integer 1 <= N <= 1,000,000.
Output
For each case, output a single line consisting of the number of cards needed to build a pyramid card of level N modulo 1,000,007.
Example
Input Example 2 3 7 Output Example 15 77
Added by: | Paulo Costa |
Date: | 2012-01-30 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | UGTO |
hide comments
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2012-02-10 20:16:45 Shashank_Jain
/\ /\/\ /\/\/\ kinda like this.. but with cards between each level ..... i can't draw that :) |
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2012-02-09 06:54:10 yahya
how could it gives Time limit exceed ! it is O(n) ?!!! |
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2012-02-08 04:15:29 Nnavneetsinha
do take modulo 1000007 at last .this costed me 3 wa's. |
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2012-02-08 00:02:11 Unicamp Alfa
The picture is equivalent to this one: http://cf.ltkcdn.net/boardgames/images/std/50408-283x424-Card_pyramid.jpg Thanks man. Last edit: 2012-02-15 11:37:51 |
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2012-02-07 17:03:08 Ikhaduri
where's the picture?? please upload it, i can't understand the question well. |