本菜鸟在红题区刷怪时，遇到了一题全WA，用了示例测试是对的，也看不出为什么，求指点

#include <iostream>
using namespace std;
int main() {
    unsigned short a;
    cin >> a;
    unsigned short lucky_number[7]{ 0 }, b[7]{ 0 };
    for (int i = 0; i < 7; i++) cin >> lucky_number[i];
    for (int i = a; i > 0; i--) {
        unsigned short same=0,d;
        for (int n = 0; n < 7; n++) {
            cin >> d;
            for (unsigned short ii : lucky_number) {
                if (ii == d) same++;
            }
        }
        b[same-1]++;
    }
    for (int i = 6; i > -1; i--) cout << b[i] << " ";
    return 0;
}