$x = <STDIN>;
$y = index ($x , "d" , 5);
if ($y != -1)
{
}
else
{
print "the letter is not found"; }
JHggPSA8U1RESU4+OwokeSA9IGluZGV4ICgkeCAsICJkIiAsIDUpOwoKaWYgKCR5ICE9IC0xKQp7CglwcmludCAkeTsKfQplbHNlCnsKCXByaW50ICJ0aGUgbGV0dGVyIGlzIG5vdCBmb3VuZCI7Cn0=