#C3805. Unique Characters Checker

    ID: 47273 Type: Default 1000ms 256MiB

Unique Characters Checker

Unique Characters Checker

You are given a string. Your task is to determine whether all characters in the string are unique. In other words, check if no character appears more than once in the string.

If we denote the input string as \(S\) of length \(n\), the requirement is that for any two indices \(i\) and \(j\) such that \(i \neq j\), the characters satisfy \(S[i] \neq S[j]\). Otherwise, the answer is false.

The answer should be printed as either True or False on a single line.

inputFormat

The input is provided from standard input (stdin) as a single line string. The string may contain spaces and any printable characters.

outputFormat

Output a single line to standard output (stdout): True if every character in the string is unique, and False otherwise.

## sample
abcdefghijk
True