Why I Get TLE error in simple Question

IN last competition i submitted the solution of the EMAILREM with php and i got TLE error in simple code
@admin PLz help why i got that TLE
Here is the Link of my Submission :- Solution: 61851983 | CodeChef

Hey @jyot_150 :wave: ,
I think TLE is due to the way you are taking input . Here is my code in PHP you can now use this way to take input.

<?php
// example input : 100 7
$result = trim(fgets(STDIN));
list($a,$b) = explode(' ',$result);
$sub = $a - $b;
echo $sub;
// output 93
?>