#997481 (C++17) No.430 文字列検索

提出ソース

結果

問題	No.430 文字列検索
ユーザー	siganai
提出日時	2024-07-26 18:46:57
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	10 ms / 2,000 ms
コード長	8,232 bytes
コンパイル時間	2,511 ms
コンパイル使用メモリ	216,396 KB
実行使用メモリ	8,160 KB
最終ジャッジ日時	2024-11-10 01:11:53
合計ジャッジ時間	2,695 ms
ジャッジサーバーID （参考情報）	judge1 / judge3

このコードへのチャレンジ
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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 5,248 KB
testcase_01	AC	10 ms 8,160 KB
testcase_02	AC	4 ms 5,248 KB
testcase_03	AC	4 ms 5,248 KB
testcase_04	AC	2 ms 5,248 KB
testcase_05	AC	2 ms 5,248 KB
testcase_06	AC	2 ms 5,248 KB
testcase_07	AC	2 ms 5,248 KB
testcase_08	AC	2 ms 5,248 KB
testcase_09	AC	1 ms 5,248 KB
testcase_10	AC	1 ms 5,248 KB
testcase_11	AC	8 ms 5,792 KB
testcase_12	AC	7 ms 6,116 KB
testcase_13	AC	7 ms 6,244 KB
testcase_14	AC	7 ms 5,796 KB
testcase_15	AC	6 ms 5,788 KB
testcase_16	AC	6 ms 5,924 KB
testcase_17	AC	6 ms 6,052 KB

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ソースコード

raw source code

#line 1 "main.cpp"
#include<bits/stdc++.h>
//#pragma GCC target("avx,avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
#ifdef LOCAL
#include <debug.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair<ll,ll>;
using pii = pair<int,int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;
using vul = vector<ull>;
using vpii = vector<pii>;
using vvpii = vector<vpii>;
using vpll = vector<pll>;
using vs = vector<string>;
template<class T> using pq = priority_queue<T,vector<T>, greater<T>>;
#define overload4(_1, _2, _3, _4, name, ...) name
#define overload3(a,b,c,name,...) name
#define rep1(n) for (ll UNUSED_NUMBER = 0; UNUSED_NUMBER < (n); ++UNUSED_NUMBER)
#define rep2(i, n) for (ll i = 0; i < (n); ++i)
#define rep3(i, a, b) for (ll i = (a); i < (b); ++i)
#define rep4(i, a, b, c) for (ll i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep1(n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep2(i,n) for(ll i = (n) - 1;i >= 0;i--)
#define rrep3(i,a,b) for(ll i = (b) - 1;i >= (a);i--)
#define rrep4(i,a,b,c) for(ll i = (a) + ((b)-(a)-1) / (c) * (c);i >= (a);i -= c)
#define rrep(...) overload4(__VA_ARGS__, rrep4, rrep3, rrep2, rrep1)(__VA_ARGS__)
#define all1(i) begin(i) , end(i)
#define all2(i,a) begin(i) , begin(i) + a
#define all3(i,a,b) begin(i) + a , begin(i) + b
#define all(...) overload3(__VA_ARGS__, all3, all2, all1)(__VA_ARGS__)
#define sum(...) accumulate(all(__VA_ARGS__),0LL)
template<class T> bool chmin(T &a, const T &b){ if(a > b){ a = b; return 1; } else return 0; }
template<class T> bool chmax(T &a, const T &b){ if(a < b){ a = b; return 1; } else return 0; }
template<class T> auto min(const T& a){return *min_element(all(a));}
template<class T> auto max(const T& a){return *max_element(all(a));}
template<class... Ts> void in(Ts&... t);
#define INT(...) int __VA_ARGS__; in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__; in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__; in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; in(__VA_ARGS__)
#define VEC(type, name, size) vector<type> name(size); in(name)
#define VV(type, name, h, w) vector<vector<type>> name(h, vector<type>(w)); in(name)
ll intpow(ll a, ll b){ll ans = 1; while(b){if(b & 1) ans *= a; a *= a; b /= 2;} return ans;}
ll modpow(ll a, ll b, ll p){ ll ans = 1; a %= p;if(a < 0) a += p;while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }
bool is_clamp(ll val,ll low,ll high) {return low <= val && val < high;}
void Yes() {cout << "Yes\n";return;}
void No() {cout << "No\n";return;}
void YES() {cout << "YES\n";return;}
void NO() {cout << "NO\n";return;}
template <typename T>
T floor(T a, T b) {return a / b - (a % b && (a ^ b) < 0);}
template <typename T>
T ceil(T x, T y) {return floor(x + y - 1, y);}
template <typename T>
T bmod(T x, T y) {return x - y * floor(x, y);}
template <typename T>
pair<T, T> divmod(T x, T y) {T q = floor(x, y);return {q, x - q * y};}
namespace IO{
#define VOID(a) decltype(void(a))
struct setting{ setting(){cin.tie(nullptr); ios::sync_with_stdio(false);fixed(cout); cout.precision(15);}} setting;
template<int I> struct P : P<I-1>{};
template<> struct P<0>{};
template<class T> void i(T& t){ i(t, P<3>{}); }
void i(vector<bool>::reference t, P<3>){ int a; i(a); t = a; }
template<class T> auto i(T& t, P<2>) -> VOID(cin >> t){ cin >> t; }
template<class T> auto i(T& t, P<1>) -> VOID(begin(t)){ for(auto&& x : t) i(x); }
template<class T, size_t... idx> void ituple(T& t, index_sequence<idx...>){in(get<idx>(t)...);}
template<class T> auto i(T& t, P<0>) -> VOID(tuple_size<T>{}){ituple(t, make_index_sequence<tuple_size<T>::value>{});} 
#undef VOID
}
#define unpack(a) (void)initializer_list<int>{(a, 0)...}
template<class... Ts> void in(Ts&... t){ unpack(IO :: i(t)); }
#undef unpack
constexpr long double PI = 3.141592653589793238462643383279L;
template <class F> struct REC {
    F f;
    REC(F &&f_) : f(forward<F>(f_)) {}
    template <class... Args> auto operator()(Args &&...args) const { return f(*this, forward<Args>(args)...); }};

constexpr int mod = 998244353;
//constexpr int mod = 1000000007;
#line 2 "library/string/trie.hpp"
template <size_t X = 26,char margin = 'a'>
struct Trie {
    struct Node {
        array<int, X> nxt;
        vector<int> idxs;
        int idx;
        char key;
        Node(char c): idx(-1),key(c) {fill(nxt.begin(),nxt.end(),-1);}
    };
    vector<Node> st;
    Trie(char c = '$') {st.emplace_back(c);}
    inline int &next(int i,int j) {return st[i].nxt[j];}
    int add(const string &s,int x) {
        int pos = 0;
        for(int i = 0;i < (int)s.size();i++) {
            int k = s[i] - margin;
            if(~next(pos,k)) {
                pos = next(pos,k);
                continue;
            }
            int npos = st.size();
            next(pos,k) = npos;
            st.emplace_back(s[i]);
            pos = npos;
        }
        st[pos].idx = x;
        st[pos].idxs.emplace_back(x);
        return pos;
    }
    int find(const string &s) {
        int pos = 0;
        for(int i = 0;i < (int)s.size();i++) {
            int k = s[i] - margin;
            if(next(pos,k) < 0) return -1;
            pos = next(pos,k);
        }
        return pos;
    }
    int move(int pos,char c) {
        assert(pos < (int)st.size());
        return pos < 0 ? -1:next(pos,c - margin);
    }
    int size() const {return st.size();}
    int idx(int pos) {return pos < 0 ? -1:st[pos].idx;}
    vector<int> idxs(int pos) { return pos < 0 ? vector<int>() : st[pos].idxs; }
};
#line 3 "library/string/AhoCorasick.hpp"
template <size_t X = 26, char margin = 'a'>
struct AhoCorasick : Trie<X + 1, margin> {
  using TRIE = Trie<X + 1, margin>;
  using TRIE::next;
  using TRIE::st;
  using TRIE::add;
  using TRIE::TRIE;
  vector<int> cnt;
  vector<int> last;
  vector<int> BFS;
  vector<int> suffix_link;
  void add(const string &s) {
    int pos = add(s,(int)last.size());
    last.emplace_back(pos);
  }
  void build() {
    int n = st.size();
    cnt.resize(n);
    suffix_link.resize(n);
    for (int i = 0; i < n; i++) {
      cnt[i] = (int)st[i].idxs.size();
    }
    queue<int> que;
    for (int i = 0; i < (int)X; i++) {
      if (~next(0, i)) {
        next(next(0, i), X) = 0;
        que.emplace(next(0, i));
      } else {
        next(0, i) = 0;
      }
    }
    BFS.clear();
    while (!que.empty()) {
      auto &x = st[que.front()];
      int fail = x.nxt[X];
      cnt[que.front()] += cnt[fail];
      que.pop();
      for (int i = 0; i < (int)X; i++) {
        int &nx = x.nxt[i];
        if (nx < 0) {
          nx = next(fail, i);
          continue;
        }
        BFS.emplace_back(nx);
        suffix_link[nx] = next(fail,i);
        que.emplace(nx);
        next(nx, X) = next(fail, i);
      }
    }
    reverse(BFS.begin(),BFS.end());
  }

  vector<int> match(string s,int heavy = true) {
    vector<int> res;
    if(heavy) {
        vector<int> visit_cnt(TRIE::size());
        int pos = 0;
        for(auto &c:s) {
            pos = next(pos, c - margin);
            visit_cnt[pos]++;
        }
        res.assign(last.size(),0);
        for(auto &x:BFS) {
            visit_cnt[suffix_link[x]] += visit_cnt[x];
        }
        for(int i = 0,size = last.size();i < size;++i) {
            res[i] = visit_cnt[last[i]];
        }
    }
    else {
        res.assign(1,0);
        int pos = 0;
        for(auto &c:s) {
            pos = next(pos, c - margin);
            res[0] += cnt[pos];
        }
    }
    return res;
  }

  int count(int pos) { return cnt[pos]; }
};
#line 99 "main.cpp"
int main() {
    STR(s);
    AhoCorasick<26,'A'> aho;
    INT(q);
    vs T(q);
    rep(i,q) {
        STR(t);
        aho.add(t);
        T[i] = t;
    }
    aho.build();
    vi ret = aho.match(s,false);
    cout << ret[0] << '\n';
}

yukicoder

結果

テストケース

ソースコード