# Chandrasekharan and Rajagopalan(1986b)
# m = 8 p = 20
# Instance format:
# machines_number parts_number
# machine1 part_to_be_processed_1 part_to_be_processed_2 ...
# machine2 part_to_be_processed_1 part_to_be_processed_2 ...
# ...

8 20
1 1 3 4 9 10 14 15 16 18 19
2 2 3 4 6 7 9 11 18 20
3 5 6 7 8 11 12 13 16 17 19 20
4 3 4 7 8 9 10 13 14 15 17 18 19 20
5 1 2 3 6 10 12 13 15 16 17 19 20
6 1 2 5 7 8 10 11 12 14 15 16 18 19
7 5 6 7 8 11 12 13 16 17 19 20
8 1 2 3 4 5 8 9 10 13 14 16 17