from operator import *
a = [0, 3, 1, 3, 2, 3, 4, 6, 3]
b = ['x', 'b', 'a', 'z', 'c', 'a']
c = ['c++', 'python', 'php', 'java', 'php']
setitem(a, 1, 99)
print(a)
setitem(b, 2, 'y')
print(b)
setitem(c, 4, 'c#')
print(c)
'''
run:
[0, 99, 1, 3, 2, 3, 4, 6, 3]
['x', 'b', 'y', 'z', 'c', 'a']
['c++', 'python', 'php', 'java', 'c#']
'''