N!

Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 101715 Accepted Submission(s): 30352

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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Accepted Code

package cn.edu.hdu.acm;

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

public class Main1042 {

        public static void main(String[] args) {
            Scanner in =new Scanner (System.in);
            while(in.hasNext())
            {
                int n=in.nextInt();
                BigInteger sum=BigInteger.ONE;
                for(int i=1;i<=n;i++)
                {
                    sum=sum.multiply(BigInteger.valueOf(i));
                }
                System.out.println(sum);
            }
        }
    }