这个不能鸽！
upd：有点想鸽啊
板子：
P2742 [USACO5.1]圈奶牛Fencing the Cows /【模板】二维凸包 \(\checkmark\)
P1452 [USACO03FALL]Beauty Contest G /【模板】旋转卡壳 \(\checkmark\)
P4196 [CQOI2006]凸多边形 /【模板】半平面交 \(\checkmark\)
P7883 平面最近点对（加强加强版） \(\checkmark\)
P1742 最小圆覆盖
P4525 【模板】自适应辛普森法 1
01 P3744 李彬的几何
02 P1354 房间最短路问题
03 P2924 [USACO08DEC]Largest Fence G
04 P3829 [SHOI2012]信用卡凸包
05 P3187 [HNOI2007]最小矩形覆盖
06 UVA1342 That Nice Euler Circuit
07 P5377 [THUPC2019]鸽鸽的分割 \(\checkmark\)
08 CF375C Circling Round Treasures
09 POJ1265 Area
10 CF1548D2 Gregor and the Odd Cows (Hard)
11 UVA11796 Dog Distance
12 P1856 [IOI1998] [USACO5.5] 矩形周长Picture
13 CF120J Minimum Sum \(\checkmark\)
14 P4423 [BJWC2011]最小三角形 \(\checkmark\)
15 P5549 [BJ United Round #3] 观察星象
16 BZOJ#2178. 圆的面积并
17 UVA1356 Bridge \(\checkmark\)
18 POJ3525 Most Distant Point from the Sea
19 P3222 [HNOI2012]射箭 \(\checkmark\)
20 P4250 [SCOI2015]小凸想跑步 \(\checkmark\)
21 P5328 [ZJOI2019] 浙江省选
22 P4361 [SHOI2015]激光发生器
23 CF528E Triangles 3000
24 uoj#242. 【UR #16】破坏蛋糕
25 P4557 [JSOI2018]战争 \(\checkmark\)
26 CF575E Spectator Riots
27 CF611G New Year and Cake
28 CF549E Sasha Circle
29 CF1025F Disjoint Triangles
30 CF559D Randomizer