ADV04B - Upper Right King (Easy)
There is a king in the lower left corner of the n × n checkmate board. The king can move one step right, one step up or one step up-right. How many ways are there for him to reach the upper right corner of the board?
Input
The first line of input contains number T - the amount of test cases. Next T lines consist of single integer n - the size of the board.
Constraints
1 <= T <= 1000
1 <= n <= 1000
Output
For each test case output the munber of ways to reach upper right corner of n × n board modulo 1000003.
Example
Input: 2 2 3 Output: 3 13
hide comments
dhruv2212000:
2019-03-20 12:22:43
Recursive approach based on F(n,n) = F(n-1,n) + F(n,n-1) + F(n-1,n-1) would give TLE. Go for delannoy numbers :) . |
Added by: | Spooky |
Date: | 2010-11-14 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | Advancement Autumn 2010, http://sevolymp.uuuq.com/, author: Alexey Shchepin |