Problem:
Score : 100 points

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.

Constraints

All values in input are integers.

1 \leq A,B,C \leq 100

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.

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.

Solution in PHP7 (7.0.15) (judge verdict: Accepted)

<?php
//error_reporting(0);
list($A,$B,$C) =  explode(" ",trim(fgets(STDIN)));
//$S = trim(fgets(STDIN));

if (($A==$B) && ($B==$C)){
  printf("Yes\n");
}
else {
  printf("No\n");
}