Unique Characters Checker

Given a string S, determine if all characters in the stringare unique, ignoring case. Two characters that differ only in case are considered identical. For example, in the string Hello, the characters 'H' and 'h' are treated as the same, hence the result should be False.

Formally, let \( n \) be the length of the string and \( U \) be the set of characters of \( S \) after converting each to lowercase. The string is unique if and only if \( n = |U| \).

inputFormat

The input consists of a single line containing the string S. The string may contain letters, digits, special characters, and spaces. Input is read from standard input (stdin).

outputFormat

Output a single line: True if the string has all unique characters (ignoring case), otherwise output False. The result should be printed to standard output (stdout).

Hello

False