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