Problem Description

You are given an 8-character string $ S $ consisting only of digits and -.

Determine whether the string $ S $ satisfies the following conditions:

• The 4th character is -.
• All characters except the 4th character are digits.

Input Format

The input is given from the standard input in the following format:

$ S $

Output Format

If the string $ S $ meets the conditions described in the problem statement, output Yes. Otherwise, output No.

Sample Input and Output

Sample Input #1

160-0022

Sample Output #1

Yes

Sample Input #2

1600022-

Sample Output #2

No

Notes/Hints

Constraints

• $ S $ is an 8-character string consisting only of (half-width) digits and -.

见题面 Input 部分

见题面 Output 部分