Java輸入輸出及高精度

Problem Address：http://acm.hdu.edu.cn/showproblem.php?pid=1261

其實，這份代碼只是為了方便以後查看Java的輸入輸出……

Java就是用來做高精度滴= =

import java.util.*;import java.math.*;public class Main {    public static BigDecimal solve(int n)    {        int i;        BigDecimal s = BigDecimal.valueOf(1.0);        for (i=1; i<=n; i++)        {            s = s.multiply(BigDecimal.valueOf(i));//乘積結果要賦值        }        return s;    }    public static void main(String[] args) {        int i;int n;Scanner cin = new Scanner(System.in);while(cin.hasNext())//判斷檔案結束{n = cin.nextInt();if (n==0) break;int b[] = new int[30];for (i=1; i<=n; i++) b[i] = cin.nextInt();//讀取整型int s = 0;BigDecimal ss = BigDecimal.valueOf(1.0);for (i=1; i<=n; i++){s += b[i];ss = ss.multiply(solve(b[i]));}ss = solve(s).divide(ss);System.out.println(ss.toBigInteger());//輸出}    }}