input:

11
3 3
2 3
4 3
1 1
1
2
3
3 3
4 1
3 4
2 1
2
3
4
10 10
37 76
71 57
66 82
85 85
21 12
94 70
60 6
68 52
2 68
29 53
19
21
46
9
99
65
44
90
50
21
10 10
26 21
77 57
38 96
80 94
5 74
95 53
58 99
50 54
74 25
29 4
54
74
50
51
82
100
15
77
42
64
10 10
14 97
5 89
37 42
36 94
67 68
20 92
42 61
67 77
53 44
99 92
...

output:

11.0
24.0
41.0
27.0
45.0
67.0
10297.0
10971.0
20746.0
7167.0
49737.0
29847.0
19872.0
44022.0
22542.0
10971.0
25391.0
35691.0
23523.0
23984.0
40259.0
51473.0
9908.0
37374.0
19979.0
30341.0
33215.5
41660.5
28085.5
33750.5
17010.5
4032.5
12239.5
22904.5
32684.5
29582.5
45013.5
5764.5
26279.5
9208.5
170...

result:

ok 203046 lines