[20251019] BOJ / P3 / 교수님은 기다리지 않는다 / 김민진 #1164
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🧷 문제 링크
교수님은 기다리지 않는다
🧭 풀이 시간
70분
👀 체감 난이도
✏️ 문제 설명
!:a와b의 무게 차이가 주어짐?:a와b의 무게가 얼마나 차이나는지 출력. 모르면UNKNOWN간접적으로 알 수 있는 경우에도 출력해야함
e.g.
a,b의 대소 관계를 알고b,c의 대소관계를 알고 있을 때a와c의 대소관계도 알 수 있음🔍 풀이 방법
얼핏 보고 세그트리인가 했는데 연결 관계가 동적이라 불가능
가중치 있는 분리집합으로 풀었습니다
⏳ 회고
지금 보니
weight는long으로 선언해야 할 듯