1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 1
9 1
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 1
21 2
22 1
23 2
24 1
25 3
26 2
27 0
28 0
29 2
30 0
31 0
32 3
33 2
34 2
35 1
36 2
37 0
38 2
39 3
40 3
41 1
42 3
43 1
44 2
45 4
46 4
47 0
48 6