結果

問題 No.2020 Sum of Common Prefix Length
ユーザー 👑 emthrmemthrm
提出日時 2022-07-22 22:13:41
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 6,825 bytes
コンパイル時間 2,397 ms
コンパイル使用メモリ 223,220 KB
実行使用メモリ 10,624 KB
最終ジャッジ日時 2024-07-04 06:38:50
合計ジャッジ時間 7,291 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 WA -
testcase_01 WA -
testcase_02 WA -
testcase_03 RE -
testcase_04 RE -
testcase_05 TLE -
testcase_06 -- -
testcase_07 -- -
testcase_08 -- -
testcase_09 -- -
testcase_10 -- -
testcase_11 -- -
testcase_12 -- -
testcase_13 -- -
testcase_14 -- -
testcase_15 -- -
testcase_16 -- -
testcase_17 -- -
testcase_18 -- -
testcase_19 -- -
testcase_20 -- -
testcase_21 -- -
testcase_22 -- -
testcase_23 -- -
testcase_24 -- -
testcase_25 -- -
testcase_26 -- -
testcase_27 -- -
testcase_28 -- -
testcase_29 -- -
testcase_30 -- -
testcase_31 -- -
testcase_32 -- -
testcase_33 -- -
testcase_34 -- -
testcase_35 -- -
testcase_36 -- -
testcase_37 -- -
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ソースコード

diff # 

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

struct HeavyLightDecomposition {
  std::vector<int> parent, subtree, id, inv, head;

  explicit HeavyLightDecomposition(const std::vector<std::vector<int>>& graph,
                                   const int root = 0)
      : graph(graph) {
    const int n = graph.size();
    parent.assign(n, -1);
    subtree.assign(n, 1);
    dfs1(root);
    id.resize(n);
    inv.resize(n);
    head.assign(n, root);
    int cur_id = 0;
    dfs2(root, &cur_id);
  }

  template <typename Fn>
  void update_v(int u, int v, const Fn f) const {
    while (true) {
      if (id[u] > id[v]) std::swap(u, v);
      f(std::max(id[head[v]], id[u]), id[v] + 1);
      if (head[u] == head[v]) break;
      v = parent[head[v]];
    }
  }

  template <typename F, typename G, typename T>
  T query_v(int u, int v, const F f, const G g, const T id_t) const {
    T left = id_t, right = id_t;
    while (true) {
      if (id[u] > id[v]) {
        std::swap(u, v);
        std::swap(left, right);
      }
      left = g(left, f(std::max(id[head[v]], id[u]), id[v] + 1));
      if (head[u] == head[v]) break;
      v = parent[head[v]];
    }
    return g(left, right);
  }

  template <typename Fn>
  void update_subtree_v(const int ver, const Fn f) const {
    f(id[ver], id[ver] + subtree[ver]);
  }

  template <typename T, typename Fn>
  T query_subtree_v(const int ver, const Fn f) const {
    return f(id[ver], id[ver] + subtree[ver]);
  }

  template <typename Fn>
  void update_e(int u, int v, const Fn f) const {
    while (true) {
      if (id[u] > id[v]) std::swap(u, v);
      if (head[u] == head[v]) {
        f(id[u], id[v]);
        break;
      } else {
        f(id[head[v]] - 1, id[v]);
        v = parent[head[v]];
      }
    }
  }

  template <typename F, typename G, typename T>
  T query_e(int u, int v, const F f, const G g, const T id_t) const {
    T left = id_t, right = id_t;
    while (true) {
      if (id[u] > id[v]) {
        std::swap(u, v);
        std::swap(left, right);
      }
      if (head[u] == head[v]) {
        left = g(left, f(id[u], id[v]));
        break;
      } else {
        left = g(left, f(id[head[v]] - 1, id[v]));
        v = parent[head[v]];
      }
    }
    return g(left, right);
  }

  template <typename Fn>
  void update_subtree_e(const int ver, const Fn f) const {
    f(id[ver], id[ver] + subtree[ver] - 1);
  }

  template <typename T, typename Fn>
  T query_subtree_e(const int ver, const Fn f) const {
    return f(id[ver], id[ver] + subtree[ver] - 1);
  }

  int lowest_common_ancestor(int u, int v) const {
    while (true) {
      if (id[u] > id[v]) std::swap(u, v);
      if (head[u] == head[v]) break;
      v = parent[head[v]];
    }
    return u;
  }

 private:
  std::vector<std::vector<int>> graph;

  void dfs1(const int ver) {
    for (int i = 0; i < graph[ver].size(); ++i) {
      if (graph[ver][i] != parent[ver]) {
        parent[graph[ver][i]] = ver;
        dfs1(graph[ver][i]);
        subtree[ver] += subtree[graph[ver][i]];
        if (subtree[graph[ver][i]] > subtree[graph[ver].front()]) {
          std::swap(graph[ver][i], graph[ver].front());
        }
      }
    }
  }

  void dfs2(const int ver, int* cur_id) {
    id[ver] = (*cur_id)++;
    inv[id[ver]] = ver;
    for (const int e : graph[ver]) {
      if (e != parent[ver]) {
        head[e] = (e == graph[ver].front() ? head[ver] : e);
        dfs2(e, cur_id);
      }
    }
  }
};

template <typename Abelian>
struct FenwickTree {
  explicit FenwickTree(const int n, const Abelian ID = 0)
      : n(n), ID(ID), data(n, ID) {}

  void add(int idx, const Abelian val) {
    for (; idx < n; idx |= idx + 1) {
      data[idx] += val;
    }
  }

  Abelian sum(int idx) const {
    Abelian res = ID;
    for (--idx; idx >= 0; idx = (idx & (idx + 1)) - 1) {
      res += data[idx];
    }
    return res;
  }

  Abelian sum(const int left, const int right) const {
    return left < right ? sum(right) - sum(left) : ID;
  }

  Abelian operator[](const int idx) const { return sum(idx, idx + 1); }

  int lower_bound(Abelian val) const {
    if (val <= ID) return 0;
    int res = 0, exponent = 1;
    while (exponent <= n) exponent <<= 1;
    for (int mask = exponent >> 1; mask > 0; mask >>= 1) {
      const int idx = res + mask - 1;
      if (idx < n && data[idx] < val) {
        val -= data[idx];
        res += mask;
      }
    }
    return res;
  }

 private:
  const int n;
  const Abelian ID;
  std::vector<Abelian> data;
};

int main() {
  constexpr int C = 26;
  int n; cin >> n;
  vector<string> s(n); REP(i, n) cin >> s[i];
  vector<string> t = s;
  int q; cin >> q;
  vector<int> x(q);
  vector<char> c(q, '$');
  REP(i, q) {
    int type; cin >> type >> x[i]; --x[i];
    if (type == 1) {
      cin >> c[i];
      t[x[i]] += c[i];
    }
  }
  vector<array<int, C>> trie(1);
  fill(ALL(trie.front()), -1);
  vector<int> pos(n, 0);
  auto add = [&](int index, char c) -> int {
    if (trie[index][c - 'a'] == -1) {
      trie[index][c - 'a'] = trie.size();
      trie.emplace_back();
      fill(ALL(trie.back()), -1);
    }
    return trie[index][c - 'a'];
  };
  REP(i, n) for (char c : s[i]) pos[i] = add(pos[i], c);
  const int m = trie.size();
  vector<vector<int>> graph(m);
  REP(i, m) REP(c, C) {
    if (trie[i][c] != -1) graph[i].emplace_back(trie[i][c]);
  }
  HeavyLightDecomposition hld(graph, 0);
  fill(ALL(pos), 0);
  FenwickTree<ll> weight(m);
  REP(i, n) for (char c : s[i]) {
    pos[i] = trie[pos[i]][c - 'a'];
    weight.add(hld.id[pos[i]], 1);
  }
  REP(i, q) {
    if (c[i] == '$') {
      cout << hld.query_v(0, pos[x[i]],
                          [&weight](const int l, const int r) -> ll { return weight.sum(l, r); },
                          [](const ll a, const ll b) -> ll { return a + b; },
                          0LL)
           << '\n';
    } else {
      pos[x[i]] = trie[pos[x[i]]][c[i] - 'a'];
      weight.add(hld.id[pos[x[i]]], 1);
    }
  }
  return 0;
}
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