結果

問題 No.430 文字列検索
コンテスト
ユーザー rniya
提出日時 2021-10-01 18:01:29
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 300 ms / 2,000 ms
コード長 7,395 bytes
コンパイル時間 2,219 ms
コンパイル使用メモリ 207,484 KB
最終ジャッジ日時 2025-01-24 18:51:25
ジャッジサーバーID
（参考情報） 		judge1 / judge1
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ファイルパターン 結果
sample AC * 4
other AC * 14
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 # 

#define LOCAL
#include <bits/stdc++.h>
using namespace std;
#pragma region Macros
typedef long long ll;
typedef __int128_t i128;
typedef unsigned int uint;
typedef unsigned long long ull;
#define ALL(x) (x).begin(), (x).end()

template <typename T> istream& operator>>(istream& is, vector<T>& v) {
    for (T& x : v) is >> x;
    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 U> ostream& operator<<(ostream& os, const pair<T, U>& p) {
    os << '(' << p.first << ',' << p.second << ')';
    return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& m) {
    os << '{';
    for (auto itr = m.begin(); itr != m.end();) {
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr != m.end()) os << ',';
    }
    os << '}';
    return os;
}
template <typename T, typename U> ostream& operator<<(ostream& os, const unordered_map<T, U>& m) {
    os << '{';
    for (auto itr = m.begin(); itr != m.end();) {
        os << '(' << itr->first << ',' << itr->second << ')';
        if (++itr != m.end()) os << ',';
    }
    os << '}';
    return os;
}
template <typename T> ostream& operator<<(ostream& os, const set<T>& s) {
    os << '{';
    for (auto itr = s.begin(); itr != s.end();) {
        os << *itr;
        if (++itr != s.end()) os << ',';
    }
    os << '}';
    return os;
}
template <typename T> ostream& operator<<(ostream& os, const multiset<T>& s) {
    os << '{';
    for (auto itr = s.begin(); itr != s.end();) {
        os << *itr;
        if (++itr != s.end()) os << ',';
    }
    os << '}';
    return os;
}
template <typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s) {
    os << '{';
    for (auto itr = s.begin(); itr != s.end();) {
        os << *itr;
        if (++itr != s.end()) os << ',';
    }
    os << '}';
    return os;
}
template <typename T> ostream& operator<<(ostream& os, const deque<T>& v) {
    for (int i = 0; i < (int)v.size(); i++) {
        os << v[i] << (i + 1 == (int)v.size() ? "" : " ");
    }
    return os;
}

template <int i, typename T> void print_tuple(ostream&, const T&) {}
template <int i, typename T, typename H, class... Args> void print_tuple(ostream& os, const T& t) {
    if (i) os << ',';
    os << get<i>(t);
    print_tuple<i + 1, T, Args...>(os, t);
}
template <typename... Args> ostream& operator<<(ostream& os, const tuple<Args...>& t) {
    os << '{';
    print_tuple<0, tuple<Args...>, Args...>(os, t);
    return os << '}';
}

void debug_out() { cerr << '\n'; }
template <class Head, class... Tail> void debug_out(Head&& head, Tail&&... tail) {
    cerr << head;
    if (sizeof...(Tail) > 0) cerr << ", ";
    debug_out(move(tail)...);
}
#ifdef LOCAL
#define debug(...)                                                                   \
    cerr << " ";                                                                     \
    cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n'; \
    cerr << " ";                                                                     \
    debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template <typename T> T gcd(T x, T y) { return y != 0 ? gcd(y, x % y) : x; }
template <typename T> T lcm(T x, T y) { return x / gcd(x, y) * y; }

int topbit(signed t) { return t == 0 ? -1 : 31 - __builtin_clz(t); }
int topbit(long long t) { return t == 0 ? -1 : 63 - __builtin_clzll(t); }
int botbit(signed a) { return a == 0 ? 32 : __builtin_ctz(a); }
int botbit(long long a) { return a == 0 ? 64 : __builtin_ctzll(a); }
int popcount(signed t) { return __builtin_popcount(t); }
int popcount(long long t) { return __builtin_popcountll(t); }
bool ispow2(int i) { return i && (i & -i) == i; }

template <class T> T ceil(T x, T y) {
    assert(y >= 1);
    return (x > 0 ? (x + y - 1) / y : x / y);
}
template <class T> T floor(T x, T y) {
    assert(y >= 1);
    return (x > 0 ? x / y : (x - y + 1) / y);
}

template <class T1, class T2> inline bool chmin(T1& a, T2 b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template <class T1, class T2> inline bool chmax(T1& a, T2 b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
#pragma endregion

#include <cassert>
#include <chrono>
#include <random>
#include <string>
#include <vector>

struct RollingHash {
    static inline uint64_t generate_base() {
        std::mt19937_64 mt(std::chrono::steady_clock::now().time_since_epoch().count());
        std::uniform_int_distribution<uint64_t> rand(2, RollingHash::mod - 1);
        return rand(mt);
    }

    RollingHash(uint64_t base = generate_base()) : base(base), power{1} {}

    template <typename T> std::vector<uint64_t> build(const T& s) const {
        int n = s.size();
        std::vector<uint64_t> hash(n + 1);
        hash[0] = 0;
        for (int i = 0; i < n; i++) hash[i + 1] = add(mul(hash[i], base), s[i]);
        return hash;
    }

    template <typename T> uint64_t get(const T& s) const {
        uint64_t res = 0;
        for (const auto& x : s) res = add(mul(res, base), x);
        return res;
    }

    uint64_t query(const std::vector<uint64_t>& hash, int l, int r) {
        assert(0 <= l && l <= r);
        extend(r - l);
        return add(hash[r], mod - mul(hash[l], power[r - l]));
    }

    uint64_t combine(uint64_t h1, uint64_t h2, size_t h2_len) {
        extend(h2_len);
        return add(mul(h1, power[h2_len]), h2);
    }

    int lcp(const std::vector<uint64_t>& a, int l1, int r1, const std::vector<uint64_t>& b, int l2, int r2) {
        int len = std::min(r1 - l1, r2 - l2);
        int lb = 0, ub = len + 1;
        while (ub - lb > 1) {
            int mid = (lb + ub) >> 1;
            (query(a, l1, l1 + mid) == query(b, l2, l2 + mid) ? lb : ub) = mid;
        }
        return lb;
    }

private:
    static constexpr uint64_t mod = (1ULL << 61) - 1;
    const uint64_t base;
    std::vector<uint64_t> power;

    static inline uint64_t add(uint64_t a, uint64_t b) {
        if ((a += b) >= mod) a -= mod;
        return a;
    }

    static inline uint64_t mul(uint64_t a, uint64_t b) {
        __uint128_t c = (__uint128_t)a * b;
        return add(c >> 61, c & mod);
    }

    inline void extend(size_t len) {
        if (power.size() > len) return;
        size_t pre = power.size();
        power.resize(len + 1);
        for (size_t i = pre - 1; i < len; i++) power[i + 1] = mul(power[i], base);
    }
};

/**
 * @brief Rolling Hash
 * @docs docs/string/RollingHash.md
 */

const int INF = 1e9;
const long long IINF = 1e18;
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
const char dir[4] = {'D', 'R', 'U', 'L'};
const long long MOD = 1000000007;
// const long long MOD = 998244353;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    string S;
    cin >> S;

    RollingHash RH;
    auto v = RH.build(S);
    map<uint64_t, int> mp;
    for (size_t j = 1; j <= 10; j++) {
        for (size_t i = 0; i + j <= S.size(); i++) {
            mp[RH.query(v, i, i + j)]++;
        }
    }

    int M, ans = 0;
    cin >> M;
    for (; M--;) {
        string C;
        cin >> C;
        ans += mp[RH.get(C)];
    }

    cout << ans << '\n';
}
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