Two-digit number

Very easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Integer $n$ is given. Print "Ok", if $n$ is two-digit number and "No" otherwise.

Input

One integer $n$ .

Print "Ok", if $n$ is two-digit number and "No" otherwise.

Input #1

Answer #1

Input #2

Answer #2

Submissions 30K

Acceptance rate 32%