Transform String by Shifting Alphabets

Given an integer \(s\) and a string \(S\), transform the string by shifting each alphabetical character by \(s\) positions in a circular manner. The transformation preserves the case of the letters and leaves non-alphabetical characters unchanged.

The formula for shifting an uppercase letter \(C\) is given by:

\[ C' = \left( (C - 'A' + s) \mod 26 \right) + 'A' \]

Similarly, for a lowercase letter \(c\):

\[ c' = \left( (c - 'a' + s) \mod 26 \right) + 'a' \]

Your task is to read the input from standard input (stdin) and output the transformed string to standard output (stdout).

inputFormat

The input consists of two lines:

• The first line contains an integer \(s\) representing the shift value.
• The second line contains the string \(S\) to be transformed.

outputFormat

Output a single line containing the transformed string.

## sample

3
Hello, World!

Khoor, Zruog!