print(30)
print('29\t30')
print('28\t29\t30')
print('27\t28\t29\t30')
print('26\t27\t28\t29\t30')
Объяснение:
print(30)
print('29\t30')
print('28\t29\t30')
print('27\t28\t29\t30')
print('26\t27\t28\t29\t30')
Объяснение: