1 -1
2 0
3 -1
4 0
5 1
6 -1
7 -1
8 1
9 0
10 0
11 1
12 1
13 -1
14 0
15 0
16 -1
17 -1
18 -1
19 1
20 1
21 0
22 -1
23 0
24 0
25 0
26 0
27 1
28 1
29 1
30 0
31 0
32 -1
33 -1
34 1
35 0
36 1
37 1
38 -1
39 1
40 -1
41 1
42 -1
43 0
44 -1
45 1
46 0
47 -1
48 0
49 1
50 1
51 -1