Given two integers and , output .
Note that the notation represents the product of all integers .
Input Specification
The first line will contain a single integer . is guaranteed to be greater than or equal to and less than or equal to .
The next line will contain a single integer . is guaranteed to be greater than or equal to and less than or equal to .
Output Specification
Output a single integer, the value of .
Sample Input 1
5
2
Sample Output 1
60
Sample Input 2
1
1
Sample Output 2
1
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