class president

문제

풀이 코드

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
      
      
      Scanner s = new Scanner(System.in);
      int num = s.nextInt();
      int[][] arr = new int[num][5];
      int num2;
      int numStudent;
      int result = -1;
      int resultNumber = 0;
      
      for (int i=0;i<num;i++){
        for (int j=0;j<5;j++){
          num2 = s.nextInt();
          arr[i][j] = num2;
        }
      }
      
      for (int i=0;i<num;i++){
        numStudent = 0;
        for (int j=0;j<num;j++){
          if (i == j) continue;
          
          if (arr[i][0] == arr[j][0] ||
              arr[i][1] == arr[j][1] ||
              arr[i][2] == arr[j][2] ||
              arr[i][3] == arr[j][3] ||
              arr[i][4] == arr[j][4]) numStudent++;
        }
        if (result < numStudent){
          result = numStudent;
          resultNumber = i + 1;
        }
      }
      System.out.print(resultNumber);
    }
}