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Description
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The only line of the input is a string (between 1 and 50 characters long, inclusive). Each character will be an alphanumeric character or a full stop ".".
Output the required answer.
Input
The only line of the input is a string (between 1 and 50 characters long, inclusive). Each character will be an alphanumeric character or a full stop ".".
Output
Output the required answer.
Samples
Codeforces
-87
APRIL.1st
17