#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b wishlist[21]; //--------------------------------------------------------------------------------------------------- void _main() { cin >> N; rep(_, 0, N) { int type; cin >> type; if (type == 0) { int n, m; cin >> n >> m; rep(i, 0, m) { string s; cin >> s; wishlist[n][s]++; } } else if (type == 1) { string b; cin >> b; int ng = 1; rep(i, 1, 21) if (wishlist[i][b]) { wishlist[i][b]--; printf("%d\n", i); ng = 0; break; } if (ng) printf("-1\n"); } else { int c; cin >> c; wishlist[c].clear(); } } }