Are the digits the same?

Given an integer n, we would like to know if all the digits of n are equal to each other.

The input of the program contains a single integer n.

The output of the program should be Yes if the digits are the same, and No otherwise.

Input

Output

4434444446

No

888888

Yes

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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