From 83653b9628be9a408426ef8ec1ec2db21606472c Mon Sep 17 00:00:00 2001 From: Jinyeong Seol Date: Thu, 27 Nov 2025 23:54:32 +0900 Subject: [PATCH] =?UTF-8?q?[20251127]=20BOJ=20/=20G5=20/=20=EA=B0=95?= =?UTF-8?q?=EC=9D=98=EC=8B=A4=20/=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 --- ...5 \352\260\225\354\235\230\354\213\244.md" | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 "Seol-JY/202511/27 BOJ G5 \352\260\225\354\235\230\354\213\244.md" diff --git "a/Seol-JY/202511/27 BOJ G5 \352\260\225\354\235\230\354\213\244.md" "b/Seol-JY/202511/27 BOJ G5 \352\260\225\354\235\230\354\213\244.md" new file mode 100644 index 00000000..56bb018d --- /dev/null +++ "b/Seol-JY/202511/27 BOJ G5 \352\260\225\354\235\230\354\213\244.md" @@ -0,0 +1,32 @@ +```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[][] lectures = new int[n][2]; + for (int i = 0; i < n; i++) { + StringTokenizer st = new StringTokenizer(br.readLine()); + st.nextToken(); + lectures[i][0] = Integer.parseInt(st.nextToken()); + lectures[i][1] = Integer.parseInt(st.nextToken()); + } + + Arrays.sort(lectures, (a, b) -> a[0] - b[0]); + + PriorityQueue pq = new PriorityQueue<>(); + + for (int[] lecture : lectures) { + if (!pq.isEmpty() && pq.peek() <= lecture[0]) { + pq.poll(); + } + pq.offer(lecture[1]); + } + + System.out.println(pq.size()); + } +} +```