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N!

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 114600    Accepted Submission(s): 34375


Problem Description
Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N!
 

Input
One N in one line, process to the end of file.
 

Output
For each N, output N! in one line.
 

Sample Input
1
2
3
 

Sample Output
1
2
6
 

Author
JGShining（极光炫影）
 

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