백준저지 13300번 반 배정

출처: https://www.acmicpc.net/problem/13300

13300번: 방 배정

 

제출 날짜: 2021년 8월 21일 토요일

 

 

코드

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[][] student = new int[6][2];
        Arrays.stream(student).forEach(a -> Arrays.fill(a, 0));
        int N = sc.nextInt();
        int K = sc.nextInt();
        for (int n = 0; n < N; n++) {
            int sGender = sc.nextInt();
            int sNum = sc.nextInt();
            student[sNum - 1][sGender]++;
        }

        int answer = 0;
        for (int i = 0; i < 6; i++) {
            answer = answer + student[i][0] / K + (student[i][0] % K == 0 ? 0 : 1);
            answer = answer + student[i][1] / K + (student[i][1] % K == 0 ? 0 : 1);
        }

        System.out.println(answer);
    }
}