405104: GYM101793 C Polar map

Memory Limit：256 MB Time Limit：8 S
Judge Style：Text Compare Creator：
Submit：0 Solved：0

Description

C. Polar maptime limit per test8 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard output

See PDF statement in attachment.

ExamplesInput
3
45 0
-45 0
0 90
Output
0.269064434316
Input
6
0 90
0 180
0 -90
80 -90
80 180
80 90
Output
0.389591701512
Input
3
-85 0
-85 179
0 90
Output
0.207400294880

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