a = set()

n1 = int(input("Enter 1st number:"))
n2 = int(input("Enter 2nd number:"))
n3 = int(input("Enter 3rd number:"))
n4 = int(input("Enter 4th number:"))
n5 = int(input("Enter 5th number:"))
n6 = int(input("Enter 6th number:"))
n7 = int(input("Enter 7th number:"))


a.add(n1)
a.add(n2)
a.add(n3)
a.add(n4)
a.add(n5)
a.add(n6)
a.add(n7)

print(a)