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F(N)

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 6408    Accepted Submission(s): 2258


Problem Description

Giving the N, can you tell me the answer of F(N)?
 

Input
Each test case contains a single integer N(1<=N<=10^9). The input is terminated by a set starting with N = 0. This set should not be processed.
 

Output
For each test case, output on a line the value of the F(N)%2009.
 

Sample Input
1
2
3
0
 

Sample Output
1
7
20
 

Source
HDU 2009-4 Programming Contest
 

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