1 2
2 1
3 1
4 0
5 1
6 0
7 1
8 0
9 0
10 0
11 1
12 0
13 1
14 0
15 0
16 0
17 1
18 0
19 1
20 0
21 0
22 0
23 1
24 0
25 0
26 0
27 0
28 0
29 1
30 0
31 1
