[BOJ] 15906 스텔라가 치킨을 선물했어요 (S5)

Author: abcxj123

정건우/4주차/260119.java

@@ -0,0 +1,59 @@
+//https://www.acmicpc.net/problem/15905
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.StringTokenizer;
+
+public class BOJ_S5_15906_스텔라가치킨을선물했어요 {
+    static class Student implements Comparable<Student> {
+        int score;
+        int penalty;
+
+        public Student(int score, int penalty) {
+            this.score = score;
+            this.penalty = penalty;
+        }
+
+        @Override
+        public int compareTo(Student o) {
+            if(this.score != o.score) {
+                return Integer.compare(o.score, this.score);
+            }
+
+            return Integer.compare(this.penalty, o.penalty);
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int N = Integer.parseInt(br.readLine());
+        List<Student> students = new ArrayList<>();
+
+        StringTokenizer st;
+        for(int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            int score = Integer.parseInt(st.nextToken());
+            int penalty = Integer.parseInt(st.nextToken());
+
+            students.add(new Student(score, penalty));
+        }
+
+        Collections.sort(students);
+
+        int fifthScore = students.get(4).score;
+        int ans = 0;
+
+        for(int i = 5; i < N; i++) {
+            if(fifthScore != students.get(i).score) break;
+
+            ans++;
+        }
+
+        System.out.println(ans);
+
+    }
+}