From 605b4d44175bd1c8b837b13888344d409c65cfdd Mon Sep 17 00:00:00 2001
From: LiiNi-coder <97495437+LiiNi-coder@users.noreply.github.com>
Date: Fri, 19 Dec 2025 23:57:51 +0900
Subject: [PATCH] =?UTF-8?q?[20251219]=20BOJ=20/=20G5=20/=20=ED=9D=99?=
 =?UTF-8?q?=EA=B8=B8=20=EB=B3=B4=EC=88=98=ED=95=98=EA=B8=B0=20/=20?=
 =?UTF-8?q?=EC=9D=B4=EC=9D=B8=ED=9D=AC?=
MIME-Version: 1.0
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---
 ...64\354\210\230\355\225\230\352\270\260.md" | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 "LiiNi-coder/202512/19 BOJ \355\235\231\352\270\270 \353\263\264\354\210\230\355\225\230\352\270\260.md"

diff --git "a/LiiNi-coder/202512/19 BOJ \355\235\231\352\270\270 \353\263\264\354\210\230\355\225\230\352\270\260.md" "b/LiiNi-coder/202512/19 BOJ \355\235\231\352\270\270 \353\263\264\354\210\230\355\225\230\352\270\260.md"
new file mode 100644
index 00000000..1bdc6d55
--- /dev/null
+++ "b/LiiNi-coder/202512/19 BOJ \355\235\231\352\270\270 \353\263\264\354\210\230\355\225\230\352\270\260.md"	
@@ -0,0 +1,43 @@
+```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));
+		StringTokenizer st = new StringTokenizer(br.readLine());
+		int N = Integer.parseInt(st.nextToken());
+		int L = Integer.parseInt(st.nextToken());
+
+		int[][] sections = new int[N][2];
+		for(int i = 0; i < N; i++){
+			st = new StringTokenizer(br.readLine());
+			sections[i][0] = Integer.parseInt(st.nextToken());
+			sections[i][1] = Integer.parseInt(st.nextToken());
+		}
+		Arrays.sort(sections, (a, b) -> a[0] - b[0]);
+		int coveredEnd = 0;
+		int answer = 0;
+
+		for(int i = 0; i < N; i++){
+			int start = sections[i][0];
+			int end = sections[i][1];
+			if(coveredEnd >= end){
+				continue;
+			}
+
+			int realStart = Math.max(coveredEnd, start);
+			int remain = end - realStart;
+			int count = remain / L;
+			if(remain % L != 0){
+				count++;
+			}
+			answer += count;
+			coveredEnd = realStart + count * L;
+		}
+
+		System.out.println(answer);
+	}
+}
+
+```