結果
問題 | No.2361 Many String Compare Queries |
ユーザー |
|
提出日時 | 2023-06-24 00:14:46 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 889 ms / 2,500 ms |
コード長 | 15,070 bytes |
コンパイル時間 | 27,819 ms |
コンパイル使用メモリ | 361,456 KB |
最終ジャッジ日時 | 2025-02-15 01:46:33 |
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 * 2 |
other | AC * 14 |
ソースコード
#pragma GCC target("avx2")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using namespace atcoder;#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())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 << ")"; returnos; }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); } }template<typename T, T INF>struct SegmentTreeBeats{int n, n0;vector<T> max_v, smax_v, max_c;vector<T> min_v, smin_v, min_c;vector<T> sum;vector<T> len, ladd, lval;void update_node_max(int k, T x) {sum[k] += (x - max_v[k]) * max_c[k];if(max_v[k] == min_v[k]){max_v[k] = min_v[k] = x;}else if(max_v[k] == smin_v[k]){max_v[k] = smin_v[k] = x;}else{max_v[k] = x;}if(lval[k] != INF && x < lval[k]){lval[k] = x;}}void update_node_min(int k, T x) {sum[k] += (x - min_v[k]) * min_c[k];if(max_v[k] == min_v[k]){max_v[k] = min_v[k] = x;}else if(smax_v[k] == min_v[k]){min_v[k] = smax_v[k] = x;}else{min_v[k] = x;}if(lval[k] != INF && lval[k] < x){lval[k] = x;}}void push(int k){if(n0 - 1 <= k) return;if(lval[k] != INF){updateall(2 * k + 1, lval[k]);updateall(2 * k + 2, lval[k]);lval[k] = INF;return;}if(ladd[k] != 0){addall(2 * k + 1, ladd[k]);addall(2 * k + 2, ladd[k]);ladd[k] = 0;}if(max_v[k] < max_v[2 * k + 1]){update_node_max(2 * k + 1, max_v[k]);}if(min_v[2 * k + 1] < min_v[k]){update_node_min(2 * k + 1, min_v[k]);}if(max_v[k] < max_v[2 * k + 2]){update_node_max(2 * k + 2, max_v[k]);}if(min_v[2 * k + 2] < min_v[k]){update_node_min(2 * k + 2, min_v[k]);}}void update(int k){sum[k] = sum[2 * k + 1] + sum[2 * k + 2];if(max_v[2 * k + 1] < max_v[2 * k + 2]){max_v[k] = max_v[2 * k + 2];max_c[k] = max_c[2 * k + 2];smax_v[k] = max(max_v[2 * k + 1], smax_v[2 * k + 2]);}else if(max_v[2 * k + 1] > max_v[2 * k + 2]){max_v[k] = max_v[2 * k + 1];max_c[k] = max_c[2 * k + 1];smax_v[k] = max(smax_v[2 * k + 1], max_v[2 * k + 2]);}else{max_v[k] = max_v[2 * k + 1];max_c[k] = max_c[2 * k + 1] + max_c[2 * k + 2];smax_v[k] = max(smax_v[2 * k + 1], smax_v[2 * k + 2]);}if(min_v[2 * k + 1] < min_v[2 * k + 2]){min_v[k] = min_v[2 * k + 1];min_c[k] = min_c[2 * k + 1];smin_v[k] = min(smin_v[2 * k + 1], min_v[2 * k + 2]);}else if(min_v[2 * k + 1] > min_v[2 * k + 2]){min_v[k] = min_v[2 * k + 2];min_c[k] = min_c[2 * k + 2];smin_v[k] = min(min_v[2 * k + 1], smin_v[2 * k + 2]);}else{min_v[k] = min_v[2 * k + 1];min_c[k] = min_c[2 * k + 1] + min_c[2 * k + 2];smin_v[k] = min(smin_v[2 * k + 1], smin_v[2 * k + 2]);}}void _query_chmin(T x, int a, int b, int k, int l, int r) {if(b <= l || r <= a || max_v[k] <= x){return;}if(a <= l && r <= b && smax_v[k] < x){update_node_max(k, x);return;}push(k);_query_chmin(x, a, b, 2 * k + 1, l, (l + r) / 2);_query_chmin(x, a, b, 2 * k + 2, (l + r) / 2, r);update(k);}void _query_chmax(T x, int a, int b, int k, int l, int r) {if(b <= l || r <= a || x <= min_v[k]){return;}if(a <= l && r <= b && x < smin_v[k]){update_node_min(k, x);return;}push(k);_query_chmax(x, a, b, 2 * k + 1, l, (l + r) / 2);_query_chmax(x, a, b, 2 * k + 2, (l + r) / 2, r);update(k);}void addall(int k, T x) {max_v[k] += x;if(smax_v[k] != -INF) smax_v[k] += x;min_v[k] += x;if(smin_v[k] != INF) smin_v[k] += x;sum[k] += len[k] * x;if(lval[k] != INF){lval[k] += x;}else{ladd[k] += x;}}void updateall(int k, T x) {max_v[k] = x; smax_v[k] = -INF;min_v[k] = x; smin_v[k] = INF;max_c[k] = min_c[k] = len[k];sum[k] = x * len[k];lval[k] = x; ladd[k] = 0;}void _query_add(T x, int a, int b, int k, int l, int r) {if(b <= l || r <= a){return;}if(a <= l && r <= b){addall(k, x);return;}push(k);_query_add(x, a, b, 2 * k + 1, l, (l + r) / 2);_query_add(x, a, b, 2 * k + 2, (l + r) / 2, r);update(k);}void _query_update(T x, int a, int b, int k, int l, int r) {if(b <= l || r <= a){return;}if(a <= l && r <= b){updateall(k, x);return;}push(k);_query_update(x, a, b, 2 * k + 1, l, (l + r) / 2);_query_update(x, a, b, 2 * k + 2, (l + r) / 2, r);update(k);}T _query_max(int a, int b, int k, int l, int r) {if(b <= l || r <= a){return -INF;}if(a <= l && r <= b){return max_v[k];}push(k);T lv = _query_max(a, b, 2 * k + 1, l, (l + r) / 2);T rv = _query_max(a, b, 2 * k + 2, (l + r) / 2, r);return max(lv, rv);}T _query_min(int a, int b, int k, int l, int r) {if(b <= l || r <= a){return INF;}if(a <= l && r <= b){return min_v[k];}push(k);T lv = _query_min(a, b, 2 * k + 1, l, (l + r) / 2);T rv = _query_min(a, b, 2 * k + 2, (l + r) / 2, r);return min(lv, rv);}T _query_sum(int a, int b, int k, int l, int r) {if(b <= l || r <= a){return 0;}if(a <= l && r <= b){return sum[k];}push(k);T lv = _query_sum(a, b, 2 * k + 1, l, (l + r) / 2);T rv = _query_sum(a, b, 2 * k + 2, (l + r) / 2, r);return lv + rv;}public:SegmentTreeBeats(int n) : n(n){vector<T> a;init(n, a);}SegmentTreeBeats(int n, vector<T> &a) : n(n){init(n, a);}void init(int n, vector<T> &a){max_v.assign(4 * n, 0), smax_v.assign(4 * n, 0), max_c.assign(4 * n, 0);min_v.assign(4 * n, 0), smin_v.assign(4 * n, 0), min_c.assign(4 * n, 0);sum.assign(4 * n, 0);len.assign(4 * n, 0), ladd.assign(4 * n, 0); lval.assign(4 * n, 0);n0 = 1;while(n0 < n) n0 <<= 1;for(int i = 0; i < 2 * n0; ++i) ladd[i] = 0, lval[i] = INF;len[0] = n0;for(int i = 0; i < n0 - 1; ++i) len[2 * i + 1] = len[2 * i + 2] = (len[i] >> 1);for(int i = 0; i < n; ++i){max_v[n0 - 1 + i] = min_v[n0 - 1 + i] = sum[n0 - 1 + i] = (!a.empty() ? a[i] : 0);smax_v[n0 - 1 + i] = -INF;smin_v[n0 - 1 + i] = INF;max_c[n0 - 1 + i] = min_c[n0 - 1 + i] = 1;}for(int i = n; i < n0; ++i){max_v[n0 - 1 + i] = smax_v[n0 - 1 + i] = -INF;min_v[n0 - 1 + i] = smin_v[n0 - 1 + i] = INF;max_c[n0 - 1 + i] = min_c[n0 - 1 + i] = 0;}for(int i = n0 - 2; i >= 0; --i){update(i);}}// range minimize queryvoid query_chmin(int a, int b, T x){_query_chmin(x, a, b, 0, 0, n0);}// range maximize queryvoid query_chmax(int a, int b, T x){_query_chmax(x, a, b, 0, 0, n0);}// range add queryvoid query_add(int a, int b, T x){_query_add(x, a, b, 0, 0, n0);}// range update queryvoid query_update(int a, int b, T x){_query_update(x, a, b, 0, 0, n0);}// range minimum queryT query_max(int a, int b){return _query_max(a, b, 0, 0, n0);}// range maximum queryT query_min(int a, int b){return _query_min(a, b, 0, 0, n0);}// range sum queryT query_sum(int a, int b){return _query_sum(a, b, 0, 0, n0);}T get(int x){return _query_sum(x, x + 1, 0, 0, n0);}};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, 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, X x){i += n;dat[i] = x;while(i > 0){i >>= 1; // parentdat[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];}};ll n, q;string s;void input(){in(n, q, s);}void solve(){vi sa = suffix_array(s);vi la = lcp_array(s, sa);vll inv(n);rep(i, n){inv[sa[i]] = i;}vll s(n + 1), s2(n);SegmentTreeBeats<ll, INF> segb(n);rep(i, n - 1) segb.query_update(i, i + 1, la[i]);vll ld(n); // longest decreaserrep(i, n - 1){segb.query_chmin(i, n - 1, la[i]);ld[i] = segb.query_sum(i, n - 1);}// out(la); out(ld);rep(i, n) s[i + 1] = s[i] + (n - sa[i]);rep(i, n - 1) s2[i + 1] = s2[i] + la[i];auto fx = [](ll a, ll b){return min(a, b);};SegTree<ll> seg(n - 1, fx, INF);rep(i, n - 1) seg.update(i, la[i]);while(q--){ll l, r; in(l, r); l--, r--;ll ans = r - l;ll idx = inv[l], len = r - l + 1;ll ok = idx, ng = n;while(abs(ok - ng) > 1){ll mid = (ok + ng) / 2;if(seg.query(idx, mid) >= len){ok = mid;}else{ng = mid;}}idx = ok;ll ok2 = idx, ng2 = -1;while(abs(ok2 - ng2) > 1){ll mid = (ok2 + ng2) / 2;if(seg.query(mid, idx) >= len){ok2 = mid;}else{ng2 = mid;}}ans += s[ok2] + (idx - ok2) * (r - l); // out(ok, ok2);if(len >= 2) ans += ld[ok];out(ans);}}int main(){ios::sync_with_stdio(false);cin.tie(nullptr);input();solve();}