Number convention

It’s easier to read numbers like 1.000.000 compared to numbers written like 1000000. The first variant helps in immediately identifying how to pronounce the number without counting the number of characters.

Given an 8-digit number, you are asked to convert it into a more readable form.

Input

Output

89034210

89.034.210

60912431

60.912.431

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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