def f(s,l={}):x=s.lower();r=x in l;l[x]=1;return r
for s in ("Monkey T", "Monkey F", "Monkey F", "Monkey with symbols F", "monkey T"):
print s, f(s) and "N" or "Y"
ZGVmIGYocyxsPXt9KTp4PXMubG93ZXIoKTtyPXggaW4gbDtsW3hdPTE7cmV0dXJuIHIKCmZvciBzIGluICgiTW9ua2V5IFQiLCAiTW9ua2V5IEYiLCAiTW9ua2V5IEYiLCAiTW9ua2V5IHdpdGggc3ltYm9scyBGIiwgIm1vbmtleSBUIik6CglwcmludCBzLCBmKHMpIGFuZCAiTiIgb3IgIlki