Islands from the Sky

Unrated

English

Language

Statement

Islands from the Sky, original English page 1

Islands from the Sky, original English page 2

Sample input 1

3 2
3
20 30
50 50
10 50
4
40 20
60 10
75 20
60 30
4
45 60
55 55
60 60
55 65
0 30 20 78 70 5
55 0 20 70 60 10

Sample output 1

48.031693036

Sample input 2

1 1
4
0 0
10 0
10 10
0 10
5 5 10 15 5 10

Sample output 2

impossible