Hans Kim

<p>다들 자랑하셨길래 저도 한번 자랑해봅니다 ;)</p><p>&nbsp;</p><pre><code class="language-java">package second_section;

import java.util.Scanner;

public class Codetest12_0 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int[][] arr = new int[m][n+1]; // [시험수][사람수] 
		for (int i = 0; i < m; i++) {
			for (int j = 1; j <= n; j++) {
				arr[i][j] = sc.nextInt();
			}
		}
		System.out.println(solution(n,m,arr));
		
	}
	private static int solution(int n, int m, int[][] arr) {
		int ans = 0;
		
		for (int i = 1; i <= n; i++) {
			boolean[] mento = new boolean[n+1];
			mento[0] = true;
			for (int j = 0; j < m; j++) {
				for (int k = 1; k <= n; k++) {
					mento[arr[j][k]] = true;
					if (arr[j][k] == i) break;
				}
			}
			for(boolean b: mento) {
				if(!b) {
					ans++;
				}
			}
		}
		
		return ans;
	}
}</code></pre>