problemas-para-competicao-pibiti-arthur-dolival/rede-anel-estelar/input/87

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