sem_1 / 0

a = [1, 0, 9, 12, 18, 34, 89, 91, 33, 127]
b = [2, 8, 9, 11, 76, 25, 44]
print(a[0],a[2],a[-1])
b.append(7)
print(b)
a[4] = 8
print(a)
merged = a + b
print(merged)
c = a.copy()
c[9] = 100
print(c)