于是他错误的点名开始了

#include <bits/stdc++.h>
using namespace std;
const int N = 500010; //长度*单词数：最坏节点个数

string s;
int n, m, ch[N][26], tag[N], tot = 1;

int main()
{
    cin >> n;

    for (int i = 1; i <= n; ++i)
    {
        cin >> s;
        int u = 1; //1号节点: ''
        for (int j = 0; j < s.length(); j++)
        {
            int c = s[j] - 'a';
            if (!ch[u][c])
                ch[u][c] = ++tot;
            u = ch[u][c];
        }
        tag[u] = 1;
    }
    cin >> m;
    while (m--)
    {
        cin >> s;
        int u = 1;
        for (int j = 0; j < s.length(); ++j)
        {
            int c = s[j] - 'a';
            u = ch[u][c];
            if (!u)
                break;
        }
        if (tag[u] == 1)
        {
            tag[u] = 2;
            cout << "OK\n";
        }
        else if (tag[u] == 2)
            cout << "REPEAT\n";
        else
            cout << "WRONG\n";
    }

    return 0;
}