I'm getting wrong answer eventhough i know it should be correct. Here's my code written in perl.

my $t = 0;
my $c = 0;
my $w = 0;
my $k = 0;


sub main(){

        if ($ARGV[0] > 100)     { die; }
        else { $t = shift @ARGV; }

        for (my $i = 0; $i < $t; $i++) {
        if ($ARGV[0] < 0)  { die; }
        else { $c = shift @ARGV; }

        $k = shift @ARGV;

        if ($ARGV[0] > 100)     { die; }
        else { $w = shift @ARGV; }

        if ( $c * $w <= $k  ) { print "yes\n"; }
        else { print "no\n";}
        }
}
main();