Archive 2015 07/21 b325. 人格分裂 射線幾何掃描線極角排序 06/02 2015 Google Code Jam Round 2 幾何極角排序貪心 05/15 [Tmt514] Beverage Cup 2 E - Kirino in Google Code Jam challenge極角排序 2014 08/29 UVa 12322 - Handgun Shooting Sport 掃描線極角排序 07/24 UVa 11696 - Beacons 極角排序 05/05 UVa 10089 - Repackaging 幾何方程轉換極角排序