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NOVICE66 - SHAKE |
Consider a meeting of n businessmen sitting around a circular table. To start the meeting, they must shake hands. We say that the shake is perfect if no arms cross each other and each businessman shakes the hand of exactly one other businessman. All handshakes happen simultaneously.
Input
First line contains an integer T(less than 5000) denoting the total number of test cases.
Each test case consists of a single integer n(1 <= n <= 5000) in one line.
Output
For each tese case, print the number of perfect shakes that exist for n businessmen modulo 1000000007.
Example
Input: 1
6
Output:
5
Added by: | amit karmakar |
Date: | 2011-07-03 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
hide comments
2023-11-01 11:52:08
@bhaveshag Catalan numbers. I just noticed this, I hope you still want to solve this |
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2012-04-25 02:02:40 not_found
can anyone post some more testcases |