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🧷 문제 링크
https://www.acmicpc.net/problem/2458
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
학생들의 수와 두 학생간의 키 비교 정보들이 주어졌을 때
자신의 키가 몇번째인지 알 수 있는 학생의 수를 구하는 문제입니다.
🔍 풀이 방법
boolean 배열을 이용하여 키 대소정보를 저장하고
플로이드 워셜을 통해 전파하여 배열을 완성했습니다.
추후 i번째 학생으로 순회할 때 j 번째보다 큰지 작은지 판단할 수 없는 경우를 계산했습니다.
⏳ 회고
A형 취득 문제였을 때는 틀렸는데 이번에는 맞췄습니다.
입력 받을 때 생각없이 양방향 모두 true 처리해버려서 고생할 뻔 했습니다