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SUMMUL - Sum of products |
One boy Petya decided to practice in addition and multiplication of numbers. For this he chose some positive integer n, and ordered all the ways to decompose it into two or more terms of positive integers, and the ways in different order terms are considered to be different (for example, for n = 3 there are three ways: 1 + 2, 2 + 1 and 1 + 1 + 1). Then he replaced all the plus signs with multiplication, and added the results (for n = 3: 1 × 2 + 2 × 1 + 1 × 1 × 1 = 5). After practicing for the day he decided to check the correctness of his calculations. Help Petya find the right answers.
Input
The first line contains T (1 <= T <= 1000) - the number of tests. Following T lines contain n (1 <= n <= 10 ^ 9).
Output
For each n from the input print the result Petya should get modulo 1000000007.
Example
Input: 3 1 2 3 Output: 0 1 5
Added by: | Spooky |
Date: | 2010-03-09 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: NODEJS OBJC PERL6 SQLITE VB.NET |
Resource: | Advancement Spring 2010, http://sevolymp.uuuq.com/, author: Alexey Shchepin |
hide comments
2024-04-20 12:41:23
my ans is coming correct for all the possible values i can calculate but still it is giving wrong answer :( @spooky |
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2020-07-21 14:58:55
Read About Fibonacci Bisection Before Proceeding towards the problem |
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2017-04-29 23:27:30 candide
Your first task: count the rabbits and find the formula ... |
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2013-05-27 07:10:34 Ouditchya Sinha
Enjoyed solving this... :) |
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2010-10-26 21:12:06 numerix
You can get your Python solution AC (even without psyco) if you implement the algorithm efficiently. |
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2010-10-24 18:13:22 pankaj
python solution could not pass. c++ passed. :((( |