Swap case

You are given a string. Replace every lowercase Latin letter with its uppercase form and every uppercase letter with its lowercase form. Other characters stay the same.

A single line — a string of $1$ to $1000$ ASCII characters (codes $32$–$126$: letters, digits, punctuation and spaces).

The changed string.

In the ASCII table the codes of an uppercase and a lowercase letter differ by $32$: 'a' - 'A' = 32. Ready-made functions exist too: Python — upper() / lower(), C++ — toupper / tolower. In the first example: hELLO, wORLD!.