cp/codeforces/1047/io/2137g.1.cpin

20 lines
81 B
Text

1
7 8 10
1 2
1 3
1 4
2 5
3 6
5 7
2 3
3 4
2 1
1 3
1 4
2 1
2 2
2 3
2 4
2 5
2 6
2 7