Kickstart Round C 2017 Problem A. Ambiguous Cipher
ProblemSusieandCalvinareclassmates.CalvinwouldliketobeabletopassnotestoSusieinclasswithouttheirteacherorotherclassmatesknowingwhattheyaretalkingabout,justincasethenotesfallintothewronghands.Calvinhasd