Toggle Case Transformation

Given a string S of length N, your task is to toggle the case of each alphabetical character. That is, convert all lowercase letters to uppercase and all uppercase letters to lowercase.

For example, if S = aBcDe then the output should be AbCdE. The program should read input from standard input and print the result to standard output.

Note: Only alphabetical characters are affected; other characters remain unchanged.

inputFormat

The input consists of two lines:

• The first line contains an integer N, the length of the string.
• The second line contains the string S.

outputFormat

Output a single line containing the toggled string.

5
aBcDe

AbCdE