[20250321] BOJ / G4 / Bi-coloring / 권혁준 #281
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
🧷 문제 링크
https://www.acmicpc.net/problem/9719
🧭 풀이 시간
7분

👀 체감 난이도
✏️ 문제 설명
주어진 그래프에서 두 개의 색만을 이용해 정점을 색칠할 수 있는 경우의 수를 구해보자.
단, 인접한 두 정점은 같은 색으로 칠할 수 없다.
🔍 풀이 방법
[사용한 알고리즘]
DFS로 직접 색을 칠하며 모순이 생기는지 판별하고, 생기지 않았다면 그 컴포넌트에 대한 색칠 가능한 경우의 수는 2가 된다.
컴포넌트별로 모두 DFS를 돌려 정답을 구했다.
⏳ 회고
재밌다