ZADAĆA

문제

Mirko has received a homework assignment to compute the greatest common divisor of the two positive integers A and B. Since the numbers are quite large, the teacher provided him with N smaller integers whose product is A, and M integers with product B. 

Mirko would like to verify his result, so he has asked you to write a program to solve his problem. 

If the result is more than 9 digits long, output only the last 9 digits.

입력

The first line of input contains the positive integer N (1 ≤ N ≤ 1000). 

The second line of input contains N space-separated positive integers less than 1 000 000 000, whose product is the number A. 

The third line of input contains the positive integer M (1 ≤ M ≤ 1000). 

The fourth line of input contains M space-separated positive integers less than 1 000 000 000, whose product is the number B. 

출력

The first and only line of output must contain the greatest common divisor of numbers A and B. If the result is more than 9 digits long, output only the last (least significant) 9 digits. 

힌트

First sample description: The greatest common divisor of numbers A = 30 and B = 20 equals 10.

3
2 3 5
2
4 5

10

4
6 2 3 4
1
1

1

3
358572 83391967 82
3
50229961 1091444 8863

000012028