51 Nod 1008 N的阶乘 mod P【Java大数乱搞】

 1 import java.math.BigInteger;
 2 import java.util.Scanner;
 3 
 4 
 5 public class sss {
 6 
 7     /**
 8      * @param args
 9      */
10     public static void main(String[] args) {
11         // TODO Auto-generated method stub
12         Scanner in=new Scanner(System.in);
13         BigInteger sum=BigInteger.ONE;
14         int n;
15         n=in.nextInt();
16         BigInteger p=in.nextBigInteger();
17         for(int i=1;i<=n;i++)
18             sum=sum.multiply(BigInteger.valueOf(i));
19         System.out.println(sum.remainder(p));
20     }
21 }