Calculate how many 0s at the end of the value below:
1n + 2n + 3n + ... + mn
Input
There are multiple cases. For each cases, the input containing two integers m, n. (1 <= m <= 100 , 1 <= n <= 1000000)
Output
One line containing one integer indicatint the number of 0s.
Sample Input
4 3
Sample Output
2
