Level 3

Place \ Cars	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
1st	0	2	3	4	6	7	9	11	13	15	18	19	20	21	22	23	24	25	26	28
2nd		1	1	2	3	4	6	7	11	12	13	14	15	18	20	20	20	20	20	20
3rd			1	1	1	2	3	4	9	10	11	12	13	14	17	17	17	17	17	17
4th				1	1	1	2	3	7	8	9	10	11	12	13	13	13	13	13	14
5th					1	1	1	2	2	4	6	7	8	9	10	11	11	11	12	13
6th						1	1	1	1	2	3	4	6	7	7	9	9	10	11	12
7th							1	1	1	1	2	2	2	3	4	7	7	8	9	9
8th								1	1	1	1	2	2	2	3	4	4	6	7	8
9th									1	1	1	1	2	2	2	2	3	4	4	6
10th										1	1	1	1	2	2	2	2	3	4	4
11th											1	1	1	1	2	2	2	3	3	3
12th												1	1	1	1	2	2	2	3	3
13th													1	1	1	1	2	2	2	3
14th														1	1	1	1	2	2	2
15th															1	1	1	1	2	2
16th																1	1	1	1	2
17th																	1	1	1	1
18th																		1	1	1
19th																			1	1
20th																				1