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Problem F
Format Name
Write a program that, given a name $s$ of the format lastname, firstname, transforms the name into the format first_initial. lastname where both the first initial and the last name are capitalized.
Input
Input consists of one line, the string $s$, where $4 \leq |s| \leq 10^6$. The string $s$ consists of two words that are each made up of lowercase English letters, and are separated by one comma and one space.
Output
Output consists of one line, the transformed name.
| Sample Input 1 | Sample Output 1 |
|---|---|
ghandi, mahatma |
M. Ghandi |
| Sample Input 2 | Sample Output 2 |
|---|---|
jakobsdottir, katrin |
K. Jakobsdottir |
