#!/usr/bin/perl
($n,$v) = split (/=/,<STDIN>);
print"Content-type:text/html\n\n";   
$filename = 'data.txt';
open(myfile,"$filename");
@getrec = <myfile>;
close(myfile);      
$cntrec = @getrec;
unlink("$filename");
open(myfile,">$filename");
for $i (0 .. $cntrec-1) {
  $id = $i + 1;
  if ($v ne $id) { 
    print myfile $getrec[$i]; 
  } else { $found=1; }
}
close(myfile);
if ($found){print'Delete ok';}else{print'Not found';}