[20250924] BOJ / G5 / Steps / 한종욱 #967
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lkhyun
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🧷 문제 링크
https://www.acmicpc.net/problem/4395
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
첫 이동과 마지막 이동은 반드시 1칸
이동할 때마다 이전 이동거리의 ±1 or 0 이동 가능
🔍 풀이 방법
대칭 구조를 가짐
d = k²→2k-1번k² < d ≤ k²+k→2k번k²+k < d ≤ (k+1)²→2k+1번⏳ 회고
x, y가 같은 걸 체크안했다.