0 = -1
1 = 0
2 = -1
3 = -1
4 = -1
5 = 0
6 = 0
7 = -3
8 = 0
9 = -9
10 = 1
11 = -1
12 = 0
13 = 0
14 = -1
15 = -1
16 = -1
17 = 10
18 = 0
19 = -2
20 = -1
21 = 0
22 = -1
23 = -2
24 = 4
25 = 0
26 = 0
27 = 0
28 = 0
29 = 0
30 = 0
31 = 2
32 = 0