# import array

# arr = array.array('i',[1,5,6,7,8])

# print(arr[0:3])

# arr.append(45)
# print(arr)

# print(arr.pop())

# print(arr)

# ======================== Set =======================
s = {1,2,2,5,4,7,8,7,5,5}
s.add(7458)
print(s)

s.remove(2)
print(s)