#982446 (C++17) No.2761 Substitute and Search

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結果

問題	No.2761 Substitute and Search
ユーザー	dyktr_06
提出日時	2024-05-17 22:55:36
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	TLE
実行時間	-
コード長	8,704 bytes
コンパイル時間	4,317 ms
コンパイル使用メモリ	237,340 KB
実行使用メモリ	145,792 KB
最終ジャッジ日時	2024-05-17 22:55:50
合計ジャッジ時間	13,823 ms
ジャッジサーバーID （参考情報）	judge1 / judge2

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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	AC	2 ms 13,764 KB
testcase_01	AC	2 ms 6,816 KB
testcase_02	AC	2 ms 6,940 KB
testcase_03	AC	2 ms 6,940 KB
testcase_04	AC	3,162 ms 138,844 KB
testcase_05	TLE	-
testcase_06	--	-
testcase_07	--	-
testcase_08	--	-
testcase_09	--	-
testcase_10	--	-
testcase_11	--	-
testcase_12	--	-
testcase_13	--	-
testcase_14	--	-
testcase_15	--	-

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

raw source code

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>

using namespace std;

#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(n) for(int i = 0; i < (int)(n); ++i)
#define rep2(i, n) for(int i = 0; i < (int)(n); ++i)
#define rep3(i, a, b) for(int i = (a); i < (int)(b); ++i)
#define rep4(i, a, b, c) for(int i = (a); i < (int)(b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)

#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)
#define ALL(a) (a).begin(), (a).end()
#define Sort(a) (sort((a).begin(), (a).end()))
#define RSort(a) (sort((a).rbegin(), (a).rend()))
#define UNIQUE(a) (a.erase(unique((a).begin(), (a).end()), (a).end()))

typedef long long int ll;
typedef unsigned long long ul;
typedef long double ld;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<char> vc;
typedef vector<string> vst;
typedef vector<double> vd;
typedef vector<long double> vld;
typedef pair<long long, long long> P;

template<class T> long long sum(const T& a){ return accumulate(a.begin(), a.end(), 0LL); }
template<class T> auto min(const T& a){ return *min_element(a.begin(), a.end()); }
template<class T> auto max(const T& a){ return *max_element(a.begin(), a.end()); }

const long long MINF = 0x7fffffffffff;
const long long INF = 0x1fffffffffffffff;
const long long MOD = 998244353;
const long double EPS = 1e-9;
const long double PI = acos(-1);

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; }

template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p){ is >> p.first >> p.second; return is; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){ os << "(" << p.first << ", " << p.second << ")"; return os; }
template<typename T> istream &operator>>(istream &is, vector<T> &v){ for(T &in : v) is >> in; return is; }
template<typename T> ostream &operator<<(ostream &os, const vector<T> &v){ for(int i = 0; i < (int) v.size(); ++i){ os << v[i] << (i + 1 != (int) v.size() ? " " : ""); } return os; }
template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp){ for(auto &[key, val] : mp){ os << key << ":" << val << " "; } return os; }
template <typename T> ostream &operator<<(ostream &os, const set<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, queue<T> q){ while(q.size()){ os << q.front() << " "; q.pop(); } return os; }
template <typename T> ostream &operator<<(ostream &os, deque<T> q){ while(q.size()){ os << q.front() << " "; q.pop_front(); } return os; }
template <typename T> ostream &operator<<(ostream &os, stack<T> st){ while(st.size()){ os << st.top() << " "; st.pop(); } return os; }
template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq){ while(pq.size()){ os << pq.top() << " "; pq.pop(); } return os; }

template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }
template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }
template<class... T> void in(T&... a){ (cin >> ... >> a); }
void out(){ cout << '\n'; }
template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; ++i){ int a, b; cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }

struct RollingHash{
    vector<unsigned long long> hashed, power;
    const unsigned long long mod = (1uLL << 61) - 1;

    unsigned long long mul(unsigned long long a, unsigned long long b) const {
        long long ret = a * b - mod * (unsigned long long)(1.0L / mod * a * b);
        return ret + mod * (ret < 0) - mod * (ret >= (long long) mod);
    }

    RollingHash(const string &s, unsigned base = 10007){
        int siz = (int) s.size();
        hashed.assign(siz + 1, 0);
        power.assign(siz + 1, 0);
        power[0] = 1;
        for(int i = 0; i < siz; i++){
            power[i + 1] = mul(power[i], base);
            hashed[i + 1] = mul(hashed[i], base) + s[i];
            if(hashed[i + 1] >= mod) hashed[i + 1] -= mod;
        }
    }

    // [l, r)
    unsigned long long get(int l, int r) const {
        unsigned long long ret = hashed[r] + mod - mul(hashed[l], power[r - l]);
        if(ret >= mod) ret -= mod;
        return ret;
    }

    unsigned long long connect(unsigned long long h1, unsigned long long h2, int h2len) const {
        unsigned long long ret = mul(h1, power[h2len]) + h2;
        if(ret >= mod) ret -= mod;
        return ret;
    }

    int LCP(const RollingHash &b, int l1, int r1, int l2, int r2){
        int len = min(r1 - l1, r2 - l2);
        int low = -1, high = len + 1;
        while(high - low > 1){
            int mid = (low + high) / 2;
            if(get(l1, l1 + mid) == b.get(l2, l2 + mid)) low = mid;
            else high = mid;
        }
        return low;
    }
};

template <typename X>
struct SegTree{
    using FX = function<X(X, X)>; // X•X -> X となる関数の型
    int n;
    FX fx;
    const X ex;
    vector<X> dat;

    SegTree(int n_, const FX &fx_, const X &ex_) : n(), fx(fx_), ex(ex_){
        int x = 1;
        while(n_ > x){
            x *= 2;
        }
        n = x;
        dat.assign(n * 2, ex);
    }

    X get(int i) const {
        return dat[i + n];
    }

    void set(int i, const X &x){ dat[i + n] = x; }

    void build(){
        for(int k = n - 1; k >= 1; k--) dat[k] = fx(dat[k * 2], dat[k * 2 + 1]);
    }

    void update(int i, const X &x){
        i += n;
        dat[i] = x;
        while(i > 0){
            i >>= 1;  // parent
            dat[i] = fx(dat[i * 2], dat[i * 2 + 1]);
        }
    }

    X query(int a, int b){
        X vl = ex;
        X vr = ex;
        int l = a + n;
        int r = b + n;
        while(l < r){
            if(l & 1) vl = fx(vl, dat[l++]);
            if(r & 1) vr = fx(dat[--r], vr);
            l >>= 1;
            r >>= 1;
        }
        return fx(vl, vr);
    }

    X operator [](int i) const {
        return dat[i + n];
    }
};

unsigned long long mod = (1LL << 61) - 1;

unsigned long long mul(unsigned long long a, unsigned long long b) {
    long long ret = a * b - mod * (unsigned long long)(1.0L / mod * a * b);
    return ret + mod * (ret < 0) - mod * (ret >= (long long) mod);
}

void input(){
}

void solve(){
    ll n, l, q; in(n, l, q);
    vst s; vin(s, n);

    using T = pair<ul, ll>;

    ul base = 10007;
    vector<ul> power(2 * l + 1, 1);
    rep(i, 2 * l){
        power[i + 1] = mul(power[i], base);
        power[i + 1] %= mod;
    }
    // {hash, len}
    ll check = 0;
    auto fx = [&](T a, T b){
        auto [hash1, len1] = a;
        auto [hash2, len2] = b;
        if(len1 + len2 > l){
          return make_pair((ul) 0, 0LL);
        }
        ul hash = (hash1 + mul(hash2, power[len1])) % mod;
        return make_pair(hash, len1 + len2);
    };
    vector<SegTree<pair<ul, ll>>> seg(n, SegTree<pair<ul, ll>>(l, fx, make_pair((ul) 0, 0LL)));
    rep(i, n){
        rep(j, l){
            seg[i].update(j, make_pair((ul) s[i][j], 1));
        }
    }

    while(q--){
        ll T; in(T);
        if(T == 1){
            ll k;
            char c, d; in(k, c, d);
            k--;
            rep(i, n){
                if(s[i][k] == c){
                    s[i][k] = d;
                    seg[i].update(k, make_pair((ul) d, 1));
                }
            }
        }else{
            string t; in(t);
            ll len = t.size();
            ul h = 0;
            rep(i, len){
                h += mul(power[i], t[i]);
                h %= mod;
            }
            ll ans = 0;
            rep(i, n){
                if(seg[i].query(0, len).first == h){
                    ans++;
                }
            }
            out(ans);
        }
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(20);

    input();
    solve();
}

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テストケース

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