Swap Case String Transformation

Given a string, convert every uppercase letter to lowercase and every lowercase letter to uppercase. Non-alphabetical characters should remain unchanged.

For example, if the input is HeLLo WOrld, the output should be hEllO woRLD. This problem tests your basic string manipulation skills and understanding of character cases.

inputFormat

The input consists of a single line containing a string. The string may include letters, digits, spaces, and special characters. The input is provided via standard input (stdin).

outputFormat

Output a single line which is the result of swapping the case of each alphabetical character in the input string. The output should be written to standard output (stdout).

HeLLo WOrld

hEllO woRLD