题解 | 查找

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++)
        cin >> a[i];
    int m;
    cin >> m;
    int b[m];
    for (int i = 0; i < m; i++)
        cin >> b[i];
    int flag = 0;
    for (int i = 0; i < m; i++) {
        int flag = 0;
        for (int j = 0; j < n; j++) {
            if (a[j] == b[i])
                flag++;
        }
        if (flag > 0)
            cout << "YES" << endl;
        else
            cout << "NO" << endl;
    }

}
// 64 位输出请用 printf("%lld")