Problem Statement

You are given three integers A, B and C.
Determine if there exists an equilateral triangle whose sides have lengths A, B and C.

Input

Input is given from Standard Input in the following format:
A B C

Output

If there exists an equilateral triangle whose sides have lengths A, B and C, print Yes; otherwise, print No.

Constraints

• All values in input are integers.
• $1 \leq A,B,C \leq 100$

Sample Input 1

2 2 2

Sample Output 1

Yes

• There exists an equilateral triangle whose sides have lengths 2, 2 and 2.

Sample Input 2

3 4 5

Sample Output 2

No

• There is no equilateral triangle whose sides have lengths 3, 4 and 5.

见题面 Input 部分

见题面 Output 部分