alps_study fork 후 -> 자신의 폴더 생성 -> 풀이 후 PR로 요청 웬만하면 다른 사람 폴더 터치X 미룬 문제: https://www.acmicpc.net/problem/22358 210818 CCW + 선분교차 https://www.acmicpc.net/problem/17386 https://www.acmicpc.net/problem/17387 https://www.acmicpc.net/problem/12781 https://www.acmicpc.net/problem/2162 https://www.acmicpc.net/problem/6439 https://www.acmicpc.net/problem/10255