EASYFACT - Easy Factorials
Finding factorials are easy but they become large quickly that is why Lucky hate factorials. Today he have another task related to factorials.
For a given number n how many ways factorial n can expressed as a sum of two or more consecutive positive integers. Can you help lucky ?
Input
First line contains single integer T < 5001, next T lines followed by an integer N<10^8 and M<10^9.
where M is a prime number.
Output
Print the desired result mod M.
Example
Input: 1 3 7 Output: 1
Explanation:: 3! = 1+2+3 only one way.
Speed Adicts My best time for all cases is 1.57s. Best of Luck have fun:) .
hide comments
goyal:
2015-05-27 20:24:11
give some other test cases
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The next big thing:
2015-05-25 06:56:26
Nice problem.....got ac, but still 4 times slower than you....any tips for speeding up?
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tech_phobic:
2015-05-20 18:22:51
The final answer has to be taken mod with M ?
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simararorarox9:
2015-05-20 02:06:26
Awesome problem. Big Like. (Y)
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simararorarox9:
2015-05-20 01:00:32
Hey [Lakshman] Can you say whether my approach is correct or not. ? Last edit: 2015-05-20 02:06:58 |
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saksham agrawal:
2015-05-17 06:17:54
Why are we entering M??
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Jan Kowalski:
2015-05-14 13:30:49
Could You perphaps provide correct result for n=8 ?
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[Lakshman]:
2015-05-14 12:10:41
@RIVU DAS I can't give you the complexity details because it will give some hint of solution. Last edit: 2015-05-14 16:37:33 |
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RIVU DAS:
2015-05-14 11:00:02
Expected complexity for this question?? |
Added by: | [Lakshman] |
Date: | 2015-05-13 |
Time limit: | 5s-10s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 JS-MONKEY |