[20251115] BOJ / G4 / 좋다 / 이준희 #1415
Merged
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🧷 문제 링크
https://www.acmicpc.net/problem/1253
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
주어진 수열에서 한 수가 다른 두 수의 합으로 나타낼 수 있을 때 이 수를 좋다 라고 합니다.
좋다의 갯수를 구하는 문제입니다.
🔍 풀이 방법
수열을 정렬한 후 이분탐색하여 두 수의 합으로 나타낼 수 있는지 찾았습니다.
⏳ 회고
평균제출횟수에 비해서는 쉬웠습니다.