[Baekjoon Online Judge] 5597 - 과제 안 내신 분..? / Java

https://www.acmicpc.net/problem/5597

5597번: 과제 안 내신 분..?

풀이

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		boolean[] studends = new boolean[30];
		
		for(int i = 0; i < 28; i++) {
			int ok = sc.nextInt();
			studends[ok - 1] = true;
		}
		
		for(int i = 0; i < 30; i++) {
			if(studends[i] == false) {
				System.out.println(i + 1);
			}
		}
	}
}