java运行样例都过了，但是提交说runtime error，为啥啊？

import java.io.*;
import java.util.*;

public class Main {
	public static void main(String[] args){
		int[] out = new int[7];
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		int[] a = new int[7];
		for(int i = 0;i<a.length;i++){
			a[i]=in.nextInt();
		}
		for(int i = 0;i<a.length-1;i++){
			for(int j = i+1;j<a.length;j++){
				if(a[i]>a[j]){
					int t = a[i];
					a[i] = a[j];
					a[j] = t;
				}
			}
		}
		while(n-->0){
			int count =0;
			int[] cs = new int[7];
			for(int i = 0;i<cs.length;i++){
				cs[i] = in.nextInt();
			}
			for(int i = 0;i<cs.length;i++){
				for(int j = 0;j<a.length;j++){
					if(cs[i]==a[j]){
						count++;
						break;
					}
				}
			}
			out[7-count]++;
			count=0;
		}
		for(int i = 0;i<out.length;i++)
		{
			System.out.print(out[i]+" ");
		}
	}
}