結果

問題 No.696 square1001 and Permutation 5
ユーザー ecottea
提出日時 2024-02-23 03:03:19
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,457 ms / 10,000 ms
コード長 14,324 bytes
コンパイル時間 5,035 ms
コンパイル使用メモリ 266,012 KB
最終ジャッジ日時 2025-02-19 18:57:45
ジャッジサーバーID
(参考情報)
judge5 / judge2
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ファイルパターン 結果
sample AC * 2
other AC * 12
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ソースコード

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#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; using ull = unsigned long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
const vi DX = { 1, 0, -1, 0 }; // 4
const vi DY = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004003104004004LL; // (int)INFL = 1010931620;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define YES(b) {cout << ((b) ? "YES\n" : "NO\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d
#define repis(i, set) for(int i = lsb(set), bset##i = set; i >= 0; bset##i -= 1 << i, i = lsb(bset##i)) // set
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // mod
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) //
//
template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T get(T set, int i) { return (set >> i) & T(1); }
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#ifdef _MSC_VER
#include "localACL.hpp"
#endif
//using mint = modint1000000007;
//using mint = modint998244353;
using mint = modint; // mint::set_mod(m);
namespace atcoder {
inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>;
#endif
#ifdef _MSC_VER // Visual Studio
#include "local.hpp"
#else // gcc
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }
#endif
//
/*
* Fenwick_tree<S, op, o, inv>(int n) : O(n)
* a[0..n) = o() (S, op, o, inv)
*
* Fenwick_tree<S, op, o, inv>(vS a) : O(n)
* a[0..n)
*
* set(int i, S x) : O(log n)
* a[i] = x
*
* S get(int i) : O(log n)
* a[i]
*
* S sum(int l, int r) : O(log n)
* Σa[l..r) o()
*
* add(int i, S x) : O(log n)
* a[i] += x
*
* int max_right(function<bool(S)>& f) : O(log n)
* f( Σa[0..r) ) = true r
* f( o() ) = truef 調
*/
template <class S, S(*op)(S, S), S(*o)(), S(*inv)(S)>
class Fenwick_tree {
// https://algo-logic.info/binary-indexed-tree/
// + 1
int n;
// v[i] : Σa[*..i] i:1-indexedv[0] 使
vector<S> v;
// Σa[1..r] o() r:1-indexed
S sum_sub(int r) const {
S res = o();
// op()
while (r > 0) {
res = op(res, v[r]);
// r 1
r -= r & -r;
}
return res;
}
public:
// a[0..n) = o()
Fenwick_tree(int n_) : n(n_ + 1), v(n, o()) {
// verify : https://judge.yosupo.jp/problem/range_kth_smallest
}
// a[0..n)
Fenwick_tree(const vector<S>& a) : n(sz(a) + 1), v(n) {
// verify : https://judge.yosupo.jp/problem/point_add_range_sum
//
rep(i, n - 1) v[i + 1] = a[i];
// op()
for (int pow2 = 1; 2 * pow2 < n; pow2 *= 2) {
for (int i = 2 * pow2; i < n; i += 2 * pow2) {
v[i] = op(v[i], v[i - pow2]);
}
}
}
Fenwick_tree() : n(0) {}
// a[i] = x i : 0-indexed
void set(int i, S x) {
//
S d = op(x, inv(get(i)));
add(i, d);
}
// a[i] i : 0-indexed
S get(int i) const {
return sum(i, i + 1);
}
// Σa[l..r) o() l, r : 0-indexed
S sum(int l, int r) const {
// verify : https://judge.yosupo.jp/problem/point_add_range_sum
if (l >= r) return o();
// 0-indexed [l, r)
// 1-indexed [l + 1, r]
// [1, r] [1, l]
return op(sum_sub(r), inv(sum_sub(l)));
}
// a[i] += x i : 0-indexed
void add(int i, S x) {
// verify : https://judge.yosupo.jp/problem/point_add_range_sum
// i 1-indexed
i++;
// op()
while (i < n) {
v[i] = op(v[i], x);
// i 1
i += i & -i;
}
}
// f( Σa[0..r) ) = true r r : 0-indexed
int max_right(const function<bool(S)>& f) const {
// verify : https://www.spoj.com/problems/ALLIN1/
S x = o();
// [l+1, r] len
int l = 0;
for (int len = 1 << msb(n - 1); len > 0; len = len >> 1) {
int r = l + len;
if (r < n && f(op(x, v[r]))) {
x = op(x, v[r]);
l = r;
}
}
return l;
}
#ifdef _MSC_VER
friend ostream& operator<<(ostream& os, const Fenwick_tree& ft) {
rep(i, ft.n - 1) {
os << ft.get(i) << " ";
}
return os;
}
#endif
};
//
/*
* Multi_set<T>(int n) : O(n)
* [0..n)
*
* Multi_set<T>(int n, vi a) : O(n)
* [0..n) a
*
* T size() : O(log n)
*
*
* T count(int v) : O(log n)
* v
*
* T count(int l, int r) : O(log n)
* [l..r)
*
* insert(int v, T k = 1) : O(log n)
* v k
*
* erase(int v, T k = 1) : O(log n)
* v k
*
* int get(T i) : O(log n)
* i i : 0-indexed n
*
* T lower_bound(int v) : O(log n)
* v 0-indexed
*
*
*/
template <class T> T opdd(T x, T y) { return x + y; }
template <class T> T edd() { return 0; }
template <class T> T invdd(T x) { return -x; }
template <class T>
struct Multi_set {
int n;
// ft[v] : v
using RSQ = Fenwick_tree<T, opdd<T>, edd<T>, invdd<T>>;
RSQ ft;
// [0..n)
Multi_set(int n) : n(n), ft(n) {
// verify : https://judge.yosupo.jp/problem/range_kth_smallest
}
// [0..n) a
Multi_set(int n, const vi& a) : n(n) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
vector<T> cnt(n);
repe(v, a) cnt[v]++;
ft = RSQ(cnt);
}
Multi_set() : n(0) {}
//
T size() { return ft.sum(0, n); }
// v
T count(int v) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
return ft.get(v);
}
// [l..r)
T count(int l, int r) { return ft.sum(l, r); }
// v k
void insert(int v, T k = 1) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
ft.add(v, k);
}
// v k
void erase(int v, T k = 1) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
ft.add(v, -k);
}
// i
int get(T i) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
auto f = [&](T x) { return x <= i; };
return ft.max_right(f);
}
// v
T lower_bound(int v) {
// verify : https://judge.yosupo.jp/problem/predecessor_problem
return ft.sum(0, v);
}
#ifdef _MSC_VER
friend ostream& operator<<(ostream& os, const Multi_set& dd) {
rep(v, dd.n) rep(hoge, dd.ft.get(v)) os << v << " ";
return os;
}
#endif
};
//O(n log n)
/*
* [0..n) p 0-indexed
*
*
*/
vi permutation_to_factorial_base(const vi& p) {
// verify : https://atcoder.jp/contests/tupc2022/tasks/tupc2022_h
int n = sz(p);
vi ds(n);
vi ini(n);
iota(all(ini), 0);
// s : [0..n)
Multi_set<int> s(n, ini);
rep(i, n) {
// [0..n) ds[i] 調
//
ds[i] = (int)s.lower_bound(p[i]);
//
s.erase(p[i]);
}
return ds;
}
//#include <boost/multiprecision/cpp_int.hpp>
//using Bint = boost::multiprecision::cpp_int; // O(N^2) TLE
//O(max(n, m))
/*
* B s[0..n) t[0..m)
*/
string add_bint(const string& s, const string& t, int B = 10) {
// verify : https://judge.yosupo.jp/problem/addition_of_big_integers
int i = sz(s) - 1, j = sz(t) - 1, c = 0;
string res;
res.reserve(max(i, j) + 2);
while (i >= 0 || j >= 0 || c > 0) {
int v = (i >= 0 ? (s[i] - '0') : 0) + (j >= 0 ? (t[j] - '0') : 0) + c;
c = v / B;
res.push_back('0' + (v % B));
i--; j--;
}
reverse(all(res));
return res;
}
//O((n + m) log(n + m))
/*
* B s[0..n) t[0..m)
*
* min(n,m)*(B-1)^2 < 998244353
*/
string mul_bint(const string& s, const string& t, int B = 10) {
// verify : https://judge.yosupo.jp/problem/multiplication_of_big_integers
if (s == "0" || t == "0") return "0";
int n = sz(s), m = sz(t);
vector<modint998244353> a(n), b(m);
rep(i, n) a[i] = s[n - 1 - i] - '0';
rep(j, m) b[j] = t[m - 1 - j] - '0';
vector<modint998244353> cm = convolution(a, b);
vi c(n + m - 1);
rep(i, n + m - 1) c[i] = cm[i].val();
int k = 0;
for (; k < n + m - 2; k++) {
c[k + 1] += c[k] / B;
c[k] %= B;
}
while (c[k] >= B) {
c.push_back(c[k] / B);
c[k] %= B;
k++;
}
string res;
res.reserve(k);
while (k >= 0) {
res += (char)(c[k] + '0');
k--;
}
return res;
}
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int n;
cin >> n;
vi p(n);
cin >> p;
--p;
auto ds = permutation_to_factorial_base(p);
dump(ds);
vector<string> a(n), b(n);
rep(i, n) {
a[i] = to_string(n - i);
b[i] = to_string(ds[i]);
}
for (int k = 1; k < n; k *= 2) {
for (int i = 0; i + k < n; i += 2 * k) {
b[i] = mul_bint(b[i], a[i + k]);
b[i] = add_bint(b[i], b[i + k]);
a[i] = mul_bint(a[i], a[i + k]);
}
}
cout << add_bint(b[0], "1") << endl;
}
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