l1 = ["Beijing", "Washington"]
l2 = ["China", "USA"]

for a, b in zip(l1, l2):
    print(f"{a} is the capital of {b}")


dic = {1: 0}
print(dic)

# print (128 >> 3)
arr = [3, 3, 4]
s = set(arr)
s.add(1)
s.add(2)
s.add(1)

# no duplicated elements
print(s)
