list_of_students = ("Melike" ,"Sinem" ,"Cansu", "Feyza")
adaylar = ("Mert", "Ali","Ece","Kübra","Sinem","Ali")

for i in adaylar:
if i in list_of_students:
print ("O")
else:
print ("x")





ELSE OLAN YERDE HATA ALIYORUM