A $3-$character string, inString, is read from input. Replace the first and second characters in inString with $\text{'}!\text{'}$ only if both are digit characters. Otherwise, inString is not changed.

Ex: If the input is $94$j$,$ then the output is:

$!!$j

Ex: If the input is $7$xj$,$ then the output is:

$7$xj