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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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2018-08-18 12:09:56
getting wrong answer after taking modulo |
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2018-07-08 09:19:57
PAY attention! You have to give number of cards modulo 1000007 as answer |
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2018-07-04 17:44:22
OEIS.ORG is very useful for problems like this one ;) |
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2018-06-15 04:48:36
spoj toolkit totaly gives wrong output.. for larger value.. wasted half an hour on solving shit!! Ac in 1 ;) |
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2018-05-26 01:24:16
Be aware of that mod 1000007. |
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2018-05-05 13:00:01
Can anyone help me figure out why it is giving WA when I take N as 'int' but AC when I take it as 'long long int' ? Range of N here is given till 10^6, well under the limit of 'int' ? |
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2018-03-25 16:38:09
my 100th :) |
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2018-03-14 14:57:43
module caused me 2 wrong answer. |
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2018-01-24 16:20:33
2*(sum of n terms)+(sum of n-1 terms (for base )) |
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2018-01-01 11:02:24
just one line of code,derive formula..AC in 2nd submission cz of i didn't notice modulo...!!! |