kruskal 썸네일형 리스트형 Freckles http://acm.pku.edu.cn/JudgeOnline/problem?id=2560 Description In an episode of the Dick Van Dyke show, little Richie connects the freckles on his Dad's back to form a picture of the Liberty Bell. Alas, one of the freckles turns out to be a scar, so his Ripley's engagement falls through. Consider Dick's back to be a plane with freckles at various (x,y) locations. Your job is to tell Richie how to.. 더보기 이전 1 다음