結果

問題 No.3239 Omnibus
ユーザー noya2
提出日時 2025-08-17 18:29:02
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 241 ms / 10,000 ms
コード長 7,247 bytes
コンパイル時間 3,424 ms
コンパイル使用メモリ 294,016 KB
実行使用メモリ 19,968 KB
最終ジャッジ日時 2025-08-17 18:29:14
合計ジャッジ時間 11,599 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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ファイルパターン 結果
sample AC * 1
other AC * 33
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 # 

#line 2 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"
using namespace std;

#include<bits/stdc++.h>
#line 1 "/Users/noya2/Desktop/Noya2_library/template/inout_old.hpp"
namespace noya2 {

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>
istream &operator>>(istream &is, pair<T, U> &p){
    is >> p.first >> p.second;
    return is;
}

template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v){
    int s = (int)v.size();
    for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
    return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v){
    for (auto &x : v) is >> x;
    return is;
}

void in() {}
template <typename T, class... U>
void in(T &t, U &...u){
    cin >> t;
    in(u...);
}

void out() { cout << "\n"; }
template <typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u){
    cout << t;
    if (sizeof...(u)) cout << sep;
    out(u...);
}

template<typename T>
void out(const vector<vector<T>> &vv){
    int s = (int)vv.size();
    for (int i = 0; i < s; i++) out(vv[i]);
}

struct IoSetup {
    IoSetup(){
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(15);
        cerr << fixed << setprecision(7);
    }
} iosetup_noya2;

} // namespace noya2
#line 1 "/Users/noya2/Desktop/Noya2_library/template/const.hpp"
namespace noya2{

const int iinf = 1'000'000'007;
const long long linf = 2'000'000'000'000'000'000LL;
const long long mod998 =  998244353;
const long long mod107 = 1000000007;
const long double pi = 3.14159265358979323;
const vector<int> dx = {0,1,0,-1,1,1,-1,-1};
const vector<int> dy = {1,0,-1,0,1,-1,-1,1};
const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string alp = "abcdefghijklmnopqrstuvwxyz";
const string NUM = "0123456789";

void yes(){ cout << "Yes\n"; }
void no(){ cout << "No\n"; }
void YES(){ cout << "YES\n"; }
void NO(){ cout << "NO\n"; }
void yn(bool t){ t ? yes() : no(); }
void YN(bool t){ t ? YES() : NO(); }

} // namespace noya2
#line 2 "/Users/noya2/Desktop/Noya2_library/template/utils.hpp"

#line 6 "/Users/noya2/Desktop/Noya2_library/template/utils.hpp"

namespace noya2{

unsigned long long inner_binary_gcd(unsigned long long a, unsigned long long b){
    if (a == 0 || b == 0) return a + b;
    int n = __builtin_ctzll(a); a >>= n;
    int m = __builtin_ctzll(b); b >>= m;
    while (a != b) {
        int mm = __builtin_ctzll(a - b);
        bool f = a > b;
        unsigned long long c = f ? a : b;
        b = f ? b : a;
        a = (c - b) >> mm;
    }
    return a << std::min(n, m);
}

template<typename T> T gcd_fast(T a, T b){ return static_cast<T>(inner_binary_gcd(std::abs(a),std::abs(b))); }

long long sqrt_fast(long long n) {
    if (n <= 0) return 0;
    long long x = sqrt(n);
    while ((x + 1) * (x + 1) <= n) x++;
    while (x * x > n) x--;
    return x;
}

template<typename T> T floor_div(const T n, const T d) {
    assert(d != 0);
    return n / d - static_cast<T>((n ^ d) < 0 && n % d != 0);
}

template<typename T> T ceil_div(const T n, const T d) {
    assert(d != 0);
    return n / d + static_cast<T>((n ^ d) >= 0 && n % d != 0);
}

template<typename T> void uniq(std::vector<T> &v){
    std::sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
}

template <typename T, typename U> inline bool chmin(T &x, U y) { return (y < x) ? (x = y, true) : false; }

template <typename T, typename U> inline bool chmax(T &x, U y) { return (x < y) ? (x = y, true) : false; }

template<typename T> inline bool range(T l, T x, T r){ return l <= x && x < r; }

} // namespace noya2
#line 8 "/Users/noya2/Desktop/Noya2_library/template/template.hpp"

#define rep(i,n) for (int i = 0; i < (int)(n); i++)
#define repp(i,m,n) for (int i = (m); i < (int)(n); i++)
#define reb(i,n) for (int i = (int)(n-1); i >= 0; i--)
#define all(v) (v).begin(),(v).end()

using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pil = pair<int,ll>;
using pli = pair<ll,int>;

namespace noya2{

/*　~ (. _________ . /)　*/

}

using namespace noya2;


#line 2 "c.cpp"

#line 2 "/Users/noya2/Desktop/Noya2_library/data_structure/fenwick_tree.hpp"

#line 4 "/Users/noya2/Desktop/Noya2_library/data_structure/fenwick_tree.hpp"

namespace noya2{

template <class T> struct fenwick_tree {
  public:
    fenwick_tree() : _n(0) {}
    explicit fenwick_tree(int n_) : _n(n_), data(n_) {}

    void add(int p, T x) {
        assert(0 <= p && p < _n);
        p++;
        while (p <= _n) {
            data[p - 1] += x;
            p += p & -p;
        }
    }

    T sum(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        return sum(r) - sum(l);
    }

  private:
    int _n;
    vector<T> data;

    T sum(int r) {
        T s = 0;
        while (r > 0) {
            s += data[r - 1];
            r -= r & -r;
        }
        return s;
    }
};

} // namespace noya2
#line 4 "c.cpp"

void solve(){
    int n, q; in(n,q);
    string s; in(s);
    auto idx = [&](char a, char b, char c){
        return ((a - 'a') * 26 + (b - 'a')) * 26 + (c - 'a');
    };
    vector<vector<pii>> qs(26*26*26);
    rep(i,n-2){
        qs[idx(s[i],s[i+1],s[i+2])].emplace_back(1,i);
    }
    vector<pii> lrs(q);
    rep(tt,q){
        int t; in(t);
        if (t == 1){
            int k; in(k); k--;
            char x; in(x);
            for (int i = k-2; i <= k; i++){
                if (0 <= i && i < n-2){
                    qs[idx(s[i],s[i+1],s[i+2])].emplace_back(2,i);
                }
            }
            s[k] = x;
            for (int i = k-2; i <= k; i++){
                if (0 <= i && i < n-2){
                    qs[idx(s[i],s[i+1],s[i+2])].emplace_back(1,i);
                }
            }
        }
        else {
            int l, r; in(l,r); l--;
            string a; in(a);
            lrs[tt] = {l,r};
            qs[idx(a[0],a[1],a[2])].emplace_back(3,tt);
        }
    }
    fenwick_tree<ll> cnt(n), sum(n);
    vector<ll> ans(q,-1);
    for (auto vs : qs){
        if (vs.empty()) continue;
        for (auto [t, i] : vs){
            if (t == 1){
                cnt.add(i,1);
                sum.add(i,i);
            }
            else if (t == 2){
                cnt.add(i,-1);
                sum.add(i,-i);
            }
            else if (t == 3){
                auto [l, r] = lrs[i];
                if (r - l < 3){
                    ans[i] = 0;
                    continue;
                }
                // i in [l, r-3]
                // sum[i] (i-l+1)
                ans[i] = sum.sum(l,r-2) + cnt.sum(l,r-2) * (-l+1);
            }
        }
        for (auto [t, i] : vs){
            if (t == 1){
                cnt.add(i,-1);
                sum.add(i,-i);
            }
            else if (t == 2){
                cnt.add(i,1);
                sum.add(i,i);
            }
        }
    }
    rep(i,q){
        if (ans[i] != -1){
            out(ans[i]);
        }
    }
}

int main(){
    int t = 1; //in(t);
    while (t--) { solve(); }
}
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