题目1179：阶乘

题目描写叙述：

输入n，

求y1=1!+3!+...m!(m是小于等于n的最大奇数）

y2=2!+4!+...p!(p是小于等于n的最大偶数)。

输入：

每组输入包含1个整数：n

输出：

可能有多组測试数据。对于每组数据，

输出题目要求的y1和y2

例子输入：

4

例子输出：

7 26

package oj1179;

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

public class oj1179{
  public static void main(String args[]){
    Scanner in=new Scanner(System.in);
    int i,k;
    int n;
    BigInteger y1,y2,tempY1,tempY2;
    while(in.hasNext()){
      n=in.nextInt();
      if(0==n){
        System.out.println(1+" "+1);
        continue;
      }
      y1=new BigInteger("0");
      y2=new BigInteger("0");
      tempY1=new BigInteger("1");
      tempY2=new BigInteger("1");
      for(i=1;i<=n;i++){
        if(i%2==0){
          for(k=1;k<=i;k++){
            tempY1=tempY1.multiply(BigInteger.valueOf(k));
          }//for k
          y1=y1.add(tempY1);
          tempY1=BigInteger.valueOf(1);
          //System.out.println(y1+" "+i);
        }//if
        else{
          for(k=1;k<=i;k++){
            tempY2=tempY2.multiply(BigInteger.valueOf(k));
          }
          y2=y2.add(tempY2);
          tempY2=BigInteger.valueOf(1);
          //System.out.println(y2+" "+i);
        }
      }//for i
      System.out.println(y2+" "+y1);
    }//while
  }
}
<div class="line number42 index41 alt1"><code class="java preprocessor">/**************************************************************</code></div><div class="line number43 index42 alt2"><code class="java spaces">    </code><code class="java preprocessor">Problem: 1179</code></div><div class="line number44 index43 alt1"><code class="java spaces">    </code><code class="java preprocessor">User: Carvin</code></div><div class="line number45 index44 alt2"><code class="java spaces">    </code><code class="java preprocessor">Language: Java</code></div><div class="line number46 index45 alt1"><code class="java spaces">    </code><code class="java preprocessor">Result: Accepted</code></div><div class="line number47 index46 alt2"><code class="java spaces">    </code><code class="java preprocessor">Time:100 ms</code></div><div class="line number48 index47 alt1"><code class="java spaces">    </code><code class="java preprocessor">Memory:15700 kb</code></div><div class="line number49 index48 alt2"><code class="java preprocessor">****************************************************************/</code></div>