# students = ['Ivan', 'Masha', 'Sasha']
# students += ['Olga']
# students += [True, 1234]
# a = [123, 'qwe']
#
# students.insert(1, a)
# students.append(a)
# print(len(students), students)
#
# print(students[::-2]) 

# if __name__ == '__main__':
#     main()
