From 94b84862ec10345fd7ab33cdaf9c7d6931827c8a Mon Sep 17 00:00:00 2001 From: Jinyeong Seol Date: Fri, 14 Nov 2025 23:48:52 +0900 Subject: [PATCH] =?UTF-8?q?[20251114]=20BOJ=20/=20G5=20/=20=EC=B5=9C?= =?UTF-8?q?=EC=86=8C=20=ED=9A=8C=EC=9D=98=EC=8B=A4=20=EA=B0=9C=EC=88=98=20?= =?UTF-8?q?/=20=EC=84=A4=EC=A7=84=EC=98=81?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement a Java program to calculate the minimum number of meeting rooms required based on start and end times of meetings. --- ...0\354\213\244 \352\260\234\354\210\230.md" | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 "Seol-JY/202511/14 BOJ G5 \354\265\234\354\206\214 \355\232\214\354\235\230\354\213\244 \352\260\234\354\210\230.md" diff --git "a/Seol-JY/202511/14 BOJ G5 \354\265\234\354\206\214 \355\232\214\354\235\230\354\213\244 \352\260\234\354\210\230.md" "b/Seol-JY/202511/14 BOJ G5 \354\265\234\354\206\214 \355\232\214\354\235\230\354\213\244 \352\260\234\354\210\230.md" new file mode 100644 index 00000000..9e38d055 --- /dev/null +++ "b/Seol-JY/202511/14 BOJ G5 \354\265\234\354\206\214 \355\232\214\354\235\230\354\213\244 \352\260\234\354\210\230.md" @@ -0,0 +1,36 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + int N = Integer.parseInt(br.readLine()); + + int[][] meetings = new int[N][2]; + + for (int i = 0; i < N; i++) { + StringTokenizer st = new StringTokenizer(br.readLine()); + meetings[i][0] = Integer.parseInt(st.nextToken()); + meetings[i][1] = Integer.parseInt(st.nextToken()); + } + + Arrays.sort(meetings, (a, b) -> Integer.compare(a[0], b[0])); + + PriorityQueue pq = new PriorityQueue<>(); + + for (int[] meeting : meetings) { + int start = meeting[0]; + int end = meeting[1]; + + if (!pq.isEmpty() && pq.peek() <= start) { + pq.poll(); + } + + pq.offer(end); + } + + System.out.println(pq.size()); + } +} +```