这几组数据的结果和LZ的不一样也AC了。。
5
1.37 0.10 2.75 0.20
2.96 2.01 3.06 2.75
2.65 1.05 4.97 1.15
2.33 0.74 4.02 0.84
2.96 0.10 4.02 1.47
Test case #1
Total explored area: 1.96

8
9.33 19.52 30.44 24.39
8.06 29.38 9.75 51.77
22.38 15.06 32.35 33.30
30.66 19.20 44.13 19.62
17.93 15.38 39.35 41.58
9.65 6.47 29.80 10.39
26.20 24.61 40.63 35.85
25.25 12.51 29.80 36.17
Test case #2
Total explored area: 941.66

8
157.98 278.30 246.25 501.22
152.89 15.06 355.43 214.74
61.53 56.12 141.85 96.97
21.43 303.77 250.07 329.65
5.83 115.65 306.10 211.88
275.44 132.52 353.21 276.49
149.71 175.49 271.40 379.94
127.42 32.57 187.05 282.22
Test case #3
Total explored area: 106782.43