不知道为什么是0分

#include<iostream>
#include<stack>
using namespace std;

stack<int>n;
int main()
{
    int cnt;
    cin >> cnt;
    while (cnt--)
    {
        int flag = 1;
        int num;
        cin >> num;
        for (int i = 0; i < num; i++)
        {
            int j;
            cin >> j;
            n.push(j);
        }

        for (int i = num - 1; i >= 0; i--)
        {
            int ans;
            cin >> ans;
            if (ans == n.top())n.pop();
            else 
            {
                cout << "No" << endl;
                flag = 0;
                break;
            }
        }
        if (flag)cout << "Yes" << endl;
    }
}