Five-digit in order

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Five-digit number is given. Determine whether all its digits are in ascending order, starting with the leftmost one. For example, in the number $15689$ all digits are arranged in ascending order.

Input

One five-digit number $n$ .

Output

Print ""YES", if all digits in number $n$ are arranged in ascending order, and ""NO" otherwise.

Examples

Input #1

Answer #1

Input #2

Answer #2

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