N!

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 75069    Accepted Submission(s): 21870


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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java大法好~~~

import java.math.BigInteger;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner sca=new Scanner(System.in);
    BigInteger res[]=new BigInteger[10000+10];
    res[0]=BigInteger.ONE;
    for(int i=1;i<10000+1;i++){
      res[i]=res[i-1].multiply(BigInteger.valueOf(i));
    }
    while(sca.hasNext()){
      int x=sca.nextInt();
      System.out.println(res[x]);
    }
  }

}