157 lines
3.2 KiB
C++
157 lines
3.2 KiB
C++
/* Problem URL: https://codeforces.com/problemset/problem/633/C */
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#include <bits/stdc++.h>
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using namespace std;
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#define V vector
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#define rmin(a, b) a = min(a, b)
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#define rmax(a, b) a = max(a, b)
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#define rep(i, lim) for (size_t i = 0; i < (lim); i++)
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#define nrep(i, s, lim) for (size_t i = s; i < (lim); i++)
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#define repv(i, v) for (auto &i : (v))
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#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
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#define sortv(v) sort(v.begin(), v.end())
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#define all(v) (v).begin(), (v).end()
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using vi = vector<int>;
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using vvi = vector<vi>;
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using vvvi = vector<vvi>;
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using vvvvi = vector<vvvi>;
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using ll = long long;
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using vl = vector<ll>;
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using vvl = vector<vl>;
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using vvvl = vector<vvl>;
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using vvvvl = vector<vvvl>;
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template<class v>
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auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
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os << vec[0];
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for (size_t i = 1; i < vec.size(); i++) {
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os << ' ' << vec[i];
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}
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os << '\n';
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<v> &vec)->istream& {
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for (auto &i : vec) {
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is >> i;
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}
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return is;
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}
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template<class v>
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auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
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for (auto &i : vec) {
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os << i[0];
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for (size_t j = 1; j < i.size(); j++) {
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os << ' ' << i[j];
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}
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os << '\n';
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}
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
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for (auto &i : vec) {
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for (auto &j : i) {
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is >> j;
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}
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}
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return is;
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}
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struct hashed_string {
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static vl p;
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static ll m;
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static ll b;
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vl hash;
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hashed_string(string &a) {
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while (p.size() <= a.size()) {
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p.push_back(((__int128)p.back() * b) % m);
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}
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hash.resize(a.size() + 1);
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rep(i, a.size()) {
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hash[i + 1] = ((__int128)hash[i] * b + tolower(a[i])) % m;
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}
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}
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ll gethash(int l, int r) {
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return ((hash[r + 1] - (__int128)hash[l] * p[r - l + 1]) % m + m) % m;
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}
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};
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vl hashed_string::p = {1};
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ll hashed_string::m = (1LL << 61) - 1;
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mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
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ll hashed_string::b = uniform_int_distribution<ll>(1, m - 1)(rng);
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int main()
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{
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ios::sync_with_stdio(false);
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cin.tie(nullptr);
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int n;
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cin >> n;
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string a;
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cin >> a;
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int m;
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cin >> m;
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unordered_map<ll, int> hashes;
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V<string> msg(m);
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int v = 0;
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for (auto &i : msg) {
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cin >> i;
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hashed_string tmp(i);
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hashes[tmp.hash.back()] = v;
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v++;
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}
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reverse(all(a));
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hashed_string rev(a);
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vi dp(n + 1, -1);
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vi aux(n + 1, -1);
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dp[0] = 0;
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for (size_t i = 1; i <= n; i++) {
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if (dp[i - 1] == -1) {
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continue;
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}
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size_t lim = min(n - i + 1, (size_t)1000);
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rep(j, lim) {
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ll hash = rev.gethash(n - i - j, n - i);
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if (hashes.count(hash)) {
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aux[i + j] = hashes[hash];
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dp[i + j] = i;
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}
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}
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}
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stack<int> s;
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size_t i = dp.size() - 1;
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while (i > 0) {
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s.push(aux[i]);
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i = dp[i] - 1;
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}
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while (!s.empty()) {
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cout << msg[s.top()] << ' ';
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s.pop();
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}
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cout << '\n';
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}
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