Problem:
Range

Write a program which reads three integers a, b and c, and prints "Yes" if a < b < c, otherwise "No".

Input

Three integers a, b and c separated by a single space are given in a line.

Output

Print "Yes" or "No" in a line.

Constraints

0 ≤ a, b, c ≤ 100

Sample Input 1

1 3 8

Sample Output 1

Yes

Sample Input 2

3 8 1

Sample Output 2

No

Solution in PHP (judge verdict: Accepted)

<?php
$y=explode(' ',trim(fgets(STDIN)));
$a=(int)$y[0];
$b=(int)$y[1];
$c=(int)$y[2];
if($a<$b){
  if($b<$c){echo "Yes\n";exit;}
}
echo "No\n";