case 1 failed: expected 0.0000000000 got 11.3510399100
input:
7 1
-7.47 -9.35
8.63 -0.98
6.65 0.30
-9.04 -3.94
6.65 3.85
4.77 6.09
-5.07 -0.77
-8.12 -8.44 0.20 1.83