10919 - Prerequisites?

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define endl '\n'
#define sz(x) int(x.size())
#define all(x) x.begin(), x.end()

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int k, c;
    while (scanf("%d", &k), k) {
        scanf("%d", &c);
        map<string, bool> taken;
        char s[5];
        for (int i = 0; i < k; i++) {
            scanf("%4s", s);
            taken[s] = 1;
        }
        int n, r;
        bool can = true;
        for (int i = 0; i < c; i++) {
            scanf("%d %d", &n, &r);
            int cnt = 0;
            for (int j = 0; j < n; j++) {
                scanf("%4s", s);
                cnt += taken[s];
            }
            can &= (cnt >= r);
        }
        char res[2][5] = {"no", "yes"};
        printf("%s\n", res[can]);
    }

}