結果
問題 | No.2454 Former < Latter |
ユーザー |
|
提出日時 | 2023-09-01 22:38:22 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 246 ms / 2,000 ms |
コード長 | 3,711 bytes |
コンパイル時間 | 6,129 ms |
コンパイル使用メモリ | 333,048 KB |
実行使用メモリ | 10,712 KB |
最終ジャッジ日時 | 2025-01-03 10:05:12 |
合計ジャッジ時間 | 7,522 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 23 |
ソースコード
#include "bits/stdc++.h" #include <unordered_map> #include <unordered_set> #include <stdio.h> #include <math.h> #include <cassert> #include "atcoder/all" #include <float.h> //#include <boost/multiprecision/cpp_int.hpp> //using namespace boost::multiprecision; // std::fixed << std::setprecision(10) << using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using mint = modint998244353; using mint2 = modint1000000007; const double eps = 1e-9; #define REP(i, n) for (ll i = 0; i < ll(n); ++i) #define REPI(i, init, n) for (ll i = init; i < ll(n); ++i) #define REPD(i, init) for (ll i = init; i >=0; --i) #define REPDI(i, init, n) for (ll i = init; i >=n; --i) #define REPE(i, c) for (const auto& i : c) #define TCASE ll t; cin >> t; REP(i, t) using vl = vector<ll>; #define VL(a, n) vector<ll> a; a.assign(n, 0); #define VLI(a, n) vector<ll> a; a.assign(n, 0); for(auto& x : a) cin >> x; #define VSI(a, n) vector<string> a; a.assign(n, ""); for(auto& x : a) cin >> x; using vvl = vector<vector<ll>>; #define VVLI(a, n, m, init) vector<vector<ll>> a(n); for(auto& x : a) x.assign(m, init); using pl = pair<ll, ll>; struct uv { ll u; ll v; ll c; }; #define VUVI(a, n) vector<uv> a; a.assign(n, {0, 0, 1}); for(auto& x : a) {cin >> x.u >> x.v; x.u--; x.v--;} #define VUVCI(a, n) vector<uv> a; a.assign(n, {0, 0, 0}); for(auto& x : a) {cin >> x.u >> x.v >> x.c; x.u--; x.v--;} vvl to_edge(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) ret[x.u].push_back(x.v); return ret; } vvl to_edge_d(const ll n, const vector<uv>& v) { vvl ret(n); for (auto& x : v) { ret[x.u].push_back(x.v); ret[x.v].push_back(x.u); } return ret; } template <class T = long long> using pql = priority_queue<T>; template <class T = long long> using pqg = priority_queue<T, vector<T>, greater<T>>; using vm = vector<mint>; using vvm = vector<vm>; const char* YES = "Yes"; const char* NO = "No"; void yn(bool f) { std::cout << (f ? YES : NO) << endl; }; template<class T> void ov(const T& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << *it; } }; template<> void ov(const vm& v) { for (auto it = v.begin(); it != v.end(); it++) { if (it != v.begin()) cout << " "; cout << it->val(); } }; const ll llhuge = 1LL << 60; //十分でかいが多少足しても溢れない数値 template<class T, class U> bool chmin(T& a, const U& b) { ll olda = a; a = min(a, b); return olda != a; } template<class T, class U> bool chmax(T& a, const U& b) { ll olda = a; a = max(a, b); return olda != a; } template<class T> void mysort(T& v) { std::sort(begin(v), end(v)); }; template<class T, class U> void mysort(T& v, U pr) { std::sort(begin(v), end(v), pr); }; template<class T> void myrev(T& v) { std::reverse(begin(v), end(v)); }; struct abi { ll a; ll b; ll i; ll n; }; bool operator<(const abi& l, const abi& r) { ll sub = l.a * r.b - r.a * l.b; if (sub == 0) return l.i < r.i; return sub > 0; } bool operator>(const abi& l, const abi& r) { return r < l; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); ll t; cin >> t; REP(ttt, t) { ll n; string s; cin >> n >> s; vector<int> sa = suffix_array(s); vector<int> lcp = lcp_array(s, sa); bool f = false; ll ans = 0; ll eql = llhuge; ll i0 = -1; REP(i, n) { if (sa[i] == 0) { i0 = i; f = true; continue; } if (!f) continue; chmin(eql, ll(lcp[i - 1])); ll ul = sa[i]; ll vl = n - ul; if (ul < vl || eql < vl) ans++; } eql = llhuge; REPD(i, i0 - 1) { chmin(eql, ll(lcp[i])); ll ul = sa[i]; ll vl = n - ul; if (ul <= eql && ul < vl) ans++; } cout << ans << endl; } return 0; }