Read two natural numbers n and d, where d is a digit
(0 <= d <= 9). Determine how many times digit d appears in the
decimal representation of n.
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Problem
Input format
Input
input.txt
The program reads from standard input two natural numbers, `n` and `d`, separated by a space. - `0 <= n <= 1000000000` - `0 <= d <= 9` - the number `0` has exactly one digit (the digit `0`)
Output format
Output
output.txt
The program prints a single natural number: the number of occurrences of digit `d` in `n`, followed by a newline.
Example
input
1223344 3
output
2
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Sample cases (from the problem)
Sample Case 1
Input
1223344 3
Expected output
2
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