[구현] 백준 8979 올림픽 JAVA

package com.test.realization;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class R_5_8979 {
    // [구현] 백준 8979 올림픽 JAVA
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] input = br.readLine().split(" ");
        int N = Integer.parseInt(input[0]);
        int K = Integer.parseInt(input[1]); // 몇위인지 궁금한 국가

        int[][] arr = new int[N + 1][3];
        for (int i = 0; i < N; i++) {
            input = br.readLine().split(" ");
            arr[Integer.parseInt(input[0])] = new int[]
                    {Integer.parseInt(input[1])
                    , Integer.parseInt(input[2])
                    , Integer.parseInt(input[3])};
        }
        //하나씩 돌면서 K보다 메달 많은 애 찾기
        int count = 0;
        int[] medalK = arr[K];
        for (int i = 1; i <= N; i++) {
            if (arr[i][0] > medalK[0]) {
                count++;
            } else if (arr[i][0] == medalK[0] && arr[i][1] > medalK[1]) {
                count++;
            } else if (arr[i][0] == medalK[0] && arr[i][1] == medalK[1] && arr[i][2] > medalK[2]) {
                count++;
            }
        }
        System.out.println(count+1);
    }
}