Canadians, eh?

You have received a warning that foreign spies may have infiltrated the great country of Canada. Fortunately, you have developed a foolproof method to determine which potential suspects are truly Canadian: A person is a true Canadian if and only if they end every sentence exactly with eh? .

Given the transcript of a sentence spoken by a suspected spy, write a program to determine if the suspect is truly Canadian…or merely an imposter in disguise!

The input consists of a single line, which is the sentence spoken by the suspect. The line will contain between $3$ and $100$ characters (inclusively). It will also only contain English letters, digits, spaces, and punctuation symbols.

Display Canadian! if the speaker is a true Canadian following the above criteria, otherwise display Imposter! .