2382: 求n!

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Normal Judger Creator:
Submit:75 Solved:24

Description

n! = 1 * 2 * …… * n 用递归的方法求n!
【输入】n 
 【输出】n! 
 【限制】n<=20

Sample Input Copy

5

Sample Output Copy

120

Source/Category