1 2 3
1 2 6
import java.io.*;
import java.math.BigInteger;
import java.util.*;
public class Main
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
while(input.hasNext())
{
int n = input.nextInt();
BigInteger p = BigInteger.ONE;
for(int i=1;i<=n;i++)
{
p=p.multiply(BigInteger.valueOf(i));
}
System.out.println(p);
}
}
}
HDU-1042-N!(Java大法好 && HDU大数水题)
原文地址：http://blog.csdn.net/qq_16542775/article/details/46438985
