Swap First and Last Characters

Given a string ( s ), your task is to swap its first and last characters. If the string contains only one character, the output remains unchanged.

For example, if ( s = "hello" ), then the output should be ( "oellh" ). Please note that the function should handle any valid string input including those containing spaces, digits, and special characters.

inputFormat

Input is provided via standard input (stdin) and consists of a single line representing the string ( s ).

outputFormat

The output, printed to standard output (stdout), is the resulting string after swapping the first and last characters of ( s ).## sample

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