結果

問題 No.2761 Substitute and Search
ユーザー 👑 binap
提出日時 2024-04-30 19:48:14
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,794 ms / 4,000 ms
コード長 2,583 bytes
コンパイル時間 4,656 ms
コンパイル使用メモリ 261,476 KB
最終ジャッジ日時 2025-02-21 09:56:13
ジャッジサーバーID
（参考情報） 		judge4 / judge2
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 * 3
other AC * 13
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>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<vector<int>> vvi;
typedef vector<vector<long long>> vvl;
typedef long double ld;
typedef pair<int, int> P;
ostream& operator<<(ostream& os, const modint& a) {os << a.val(); return os;}
template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;}
template <int m> ostream& operator<<(ostream& os, const dynamic_modint<m>& a) {os << a.val(); return os;}
template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;}
template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;}
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); return 
    os;}
template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : ""); 
    return os;}
template<typename T> void chmin(T& a, T b){a = min(a, b);}
template<typename T> void chmax(T& a, T b){a = max(a, b);}
random_device rd;
mt19937 mt(rd());
int random_prime(){
    while (true){
        int pr = mt() % 100000000 + 900000000;
        if (atcoder::internal::is_prime_constexpr(pr)){
            return pr;
        }
    }
}
using ull = unsigned long long;
using mint = modint998244353;
const int base = 334;
struct S{
    mint val, c;
    S(mint val, mint c) : val(val), c(c) {}
};
S op(S a, S b){
    S res(a.val * b.c + b.val, a.c * b.c);
    return res;
}
S e(){
    S e(mint(0), mint(1));
    return e;
}
int main(){
    int n, l, q;
    cin >> n >> l >> q;
    vector<string> s(n);
    cin >> s;
    vector<segtree<S, op, e>> seg;
    rep(i, n){
        vector<S> init(l, S(mint(0), base));
        rep(j, l) init[j] = S(mint(s[i][j] - 'a'), base);
        segtree<S, op, e> seg_sub(init);
        seg.push_back(seg_sub);
    }
    rep(_, q){
        int t;
        cin >> t;
        if(t == 1){
            int k;
            char c, d;
            cin >> k >> c >> d;
            k--;
            rep(i, n){
                if(s[i][k] == c){
                    s[i][k] = d;
                    seg[i].set(k, S(mint(d - 'a'), base));
                }
            }
        }
        if(t == 2){
            string t;
            cin >> t;
            int m = t.size();
            mint rh = 0;
            int ans = 0;
            rep(j, m){
                rh *= base;
                rh += t[j] - 'a';
            }
            rep(i, n){
                auto [val, c] = seg[i].prod(0, m);
                if(val == rh) ans++;
            }
            cout << ans << "\n";
        }
    }
    return 0;
}
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