結果

問題 No.2761 Substitute and Search
ユーザー pitP
提出日時 2024-05-17 22:33:54
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
MLE  
実行時間 -
コード長 4,753 bytes
コンパイル時間 5,903 ms
コンパイル使用メモリ 324,392 KB
実行使用メモリ 1,087,336 KB
最終ジャッジ日時 2024-12-20 14:35:24
合計ジャッジ時間 49,731 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2 MLE * 1
other TLE * 2 MLE * 11
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); }
istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); }
istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } 
typedef long long ll;
typedef vector<vector<int>> Graph;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define FOR(i,l,r) for (int i = l;i < (int)(r); i++)
#define rep(i,n) for (int i = 0;i < (int)(n); i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define my_sort(x) sort(x.begin(), x.end())
#define my_max(x) *max_element(all(x))
#define my_min(x) *min_element(all(x))
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const int INF = (1<<30) - 1;
const ll LINF = (1LL<<62) - 1;
const int MOD = 998244353;
const int MOD2 = 1e9+7;
const double PI = acos(-1);
vector<int> di = {1,0,-1,0};
vector<int> dj = {0,1,0,-1};
#ifdef LOCAL
#  include <debug_print.hpp>
#  define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define debug(...) (static_cast<void>(0))
#endif
struct RollingHash{
    static const int B = 3;
    long long base[B] = {114514, 1919, 810};
    long long mod[B] = {1000000007, 1000000009, 998244353};
    int N;
    vector<vector<long long>> hash;
    vector<vector<long long>> pw;
    RollingHash(string &S){
        N = S.size();
        hash.resize(B);
        pw.resize(B);
        for(int b = 0; b < B; b++){
            hash[b].resize(N + 1, 0);
            pw[b].resize(N + 1, 1);
            for(int i = 0; i < N; i++){
                hash[b][i + 1] = (hash[b][i] * base[b] + S[i]) % mod[b];
                pw[b][i + 1] = pw[b][i] * base[b] % mod[b];
            }
        }
    }
    vector<long long> get(int l, int r){
        vector<long long> res(B);
        for(int b = 0; b < B; b++){
            res[b] = (hash[b][r] - (hash[b][l] * pw[b][r - l]) % mod[b] + mod[b]) % mod[b];
        }
        return res;
    }
    int LCP(int l1, int r1, int l2, int r2){
        // O(log|S|)
        // return LCP between S[l1, r1) and S[l2, r2)
        int len = min(r1 - l1, r2 - l2);
        int ok = -1, ng = len + 1;
        while(abs(ok - ng) > 1){
            int mid = (ok + ng) / 2;
            if (get(l1, l1 + mid) == get(l2, l2 + mid)) ok = mid;
            else ng = mid;
        }
        return ok;
    }
};
static const int B = 3;
long long base[B] = {114514, 1919, 810};
long long mod[B] = {1000000007, 1000000009, 998244353};
struct Hash{
    ll hash, pow;
};
using T = array<Hash, B>;
T op(T lhs, T rhs){
    T res;
    rep(i,B){
        res[i].hash = (lhs[i].hash * rhs[i].pow + rhs[i].hash) % mod[i];
        res[i].pow = (lhs[i].pow * rhs[i].pow) % mod[i];
    }
    return res;
}
T e(){
    T res;
    rep(i,B) res[i] = Hash{0, 1};
    return res;
}
int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    int N, L, Q; cin >> N >> L >> Q;
    vector<string> S(N);
    rep(i, N) cin >> S[i];
    string W;
    vector<int> len(N), wa(N + 1, 0);
    rep(i, N) {
        W += S[i];
        len[i] = (int)S[i].size();
        wa[i + 1] = wa[i] + len[i];
    }
    auto change = [&](char c){
        T res;
        rep(i,B) {
            res[i].hash = c;
            res[i].pow = base[i];
        }
        return res;
    };
    vector<T> vec(L * N);
    rep(i,L * N) vec[i] = change(W[i]);
    segtree<T,op,e> seg(vec);
    while(Q--){
        int op; cin >> op;
        if(op == 1){
            int k; cin >> k; k--;
            char c, d; cin >> c >> d;
            rep(i, N){
                if(len[i] < k) continue;
                if(W[wa[i] + k] == c){
                    W[wa[i] + k] = c;
                    seg.set(wa[i] + k, change(d));
                }
            }
        }
        else{
            string t; cin >> t;
            int m = t.size();
            RollingHash rh(t);
            int ans = 0;
            rep(i, N){
                if(len[i] < m) continue;
                vector<long long> hash;
                auto res = seg.prod(wa[i], wa[i] + m);
                rep(i, B) hash.push_back(res[i].hash);
                if(rh.get(0, (int)t.size()) == hash) ans++;
            }
            cout << ans << endl;
        }
    }
}
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