pat乙级题目，10038Java，运行有两个有错，看不出是哪有错，考虑不全吗？

Question

import java.util.Arrays;
import java.util.Scanner;
public class Main38 {
public static void main(String[] args){
    int[] goadcount = new int[100];
    Arrays.fill(goadcount, 0);
    Scanner sc = new Scanner(System.in);
    int countren = sc.nextInt();
    for(int i = 0;i<countren;i++){
        int grade = sc.nextInt();
        goadcount[grade-1]++;
    }
    int scan = sc.nextInt();
    for(int i = 0;i<scan-1;i++){
        int grade = sc.nextInt();
        System.out.print(goadcount[grade-1]+" ");
    }
    System.out.print(goadcount[sc.nextInt()-1]);
}
}