[20250213] BOJ / 골드4 / 화장실의 규칙 / 설진영

Seol-JY/202502/13 BOJ G4 화장실의 규칙.md

@@ -0,0 +1,88 @@
+```java
+import java.io.*;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.PriorityQueue;
+import java.util.Queue;
+import java.util.StringTokenizer;
+public class Main {
+    public static void main(String[] args) throws IOException {
+        Queue<Person> queue = new PriorityQueue<>();
+
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int N = Integer.parseInt(st.nextToken());
+        int M = Integer.parseInt(st.nextToken());
+        int K = Integer.parseInt(st.nextToken());
+
+
+        List<Queue<Person>> lists = new ArrayList<>();
+        for (int i = 0; i < M; i++) {
+            lists.add(new ArrayDeque<>());
+        }
+
+        for (int i = 0; i < N; i++) {
+            lists.get(i%M).add(Person.create(br, K, i, i%M));
+        }
+
+        int answer = 0;
+        for (int i = 0; i < M; i++) {
+            if(!lists.get(i).isEmpty()) queue.add(lists.get(i).poll());
+        }
+        while(true) {
+            Person person = queue.poll();
+            if (person.getIsDeka()) {
+                System.out.println(answer);
+                break;
+            }
+            answer++;
+
+            if(!lists.get(person.getLine()).isEmpty()) {
+                queue.add(lists.get(person.getLine()).poll());
+            }
+        }
+
+
+    }
+
+    static class Person implements Comparable<Person> {
+        private final int d;
+        private final int h;
+        private final boolean isDeka;
+        private final int line;
+
+        private Person(int d, int h, boolean isDeka, int line) {
+            this.d = d;
+            this.h = h;
+            this.isDeka = isDeka;
+            this.line = line;
+        }
+
+        public static Person create(BufferedReader br, int k, int index, int line) throws IOException {
+            StringTokenizer st = new StringTokenizer(br.readLine());
+            return new Person(Integer.parseInt(st.nextToken()), Integer.parseInt(st.nextToken()), index == k, line);
+        }
+
+        public int getLine() {
+            return this.line;
+        }
+
+        public boolean getIsDeka() {
+            return this.isDeka;
+        }
+
+        @Override
+        public int compareTo(Person o) {
+            int compareD = o.d - this.d;
+            if (compareD != 0) return compareD;
+
+            int compareH = o.h - this.h;
+            if (compareH != 0) return compareH;
+
+            return this.line - o.line;
+        }
+    }
+}
+
+```