1170: 求积s=1×2 × 3 × … × n

Memory Limit:0 MB Time Limit:1 S
Judge Style:Text Compare Creator:
Submit:255 Solved:207

Description

求积s=1×2 × 3 × … × n,如输入N=3,需要计算1×2 × 3的值,并将其输出(N<12)

Input

输入一个整数N

Output

输出积

Sample Input Copy

3

Sample Output Copy

6

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