結果

問題 No.2075 GCD Subsequence
ユーザー ecottea
提出日時 2022-09-17 04:25:46
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3,294 ms / 4,000 ms
コード長 12,331 bytes
コンパイル時間 4,844 ms
コンパイル使用メモリ 256,268 KB
実行使用メモリ 11,936 KB
最終ジャッジ日時 2024-12-22 00:15:20
合計ジャッジ時間 45,152 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 28
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

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = 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 vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>;
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 = 4004004004004004004LL;
double EPS = 1e-12;
//
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 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 < (1 << int(d)); ++set) // d
#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);} //
//
template <class T> inline ll pow(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, 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; }
// Visual Studio
#ifdef _MSC_VER
#include "local.hpp"
// gcc
#else
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 gcd __gcd
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }
#endif
#endif //
//--------------AtCoder --------------
#include <atcoder/all>
using namespace atcoder;
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>;
//----------------------------------------
// O(n^2 log max(a))
mint TLE(int n, vi a) {
vm dp(n);
rep(i, n) {
rep(j, i) {
if (gcd(a[i], a[j]) == 1) continue;
dp[i] += dp[j];
}
dp[i]++;
}
return accumulate(all(dp), mint(0));
}
//
/*
* Factor_integer(int n) : O(n log(log n))
* n
*
* factor_integer(int i, map<int, int>& pps) : O(log n)
* i pps
*/
struct Factor_integer {
// verify : https://atcoder.jp/contests/abc215/tasks/abc215_d
int n;
// d[i] : i
vi d;
// n
Factor_integer(int n_) : n(n_), d(n + 1) {
iota(all(d), 0);
for (int p = 2; p * p <= n; p++) {
if (d[p] != p) continue;
for (int i = p; i <= n; i += p) {
d[i] = p;
}
}
}
// i pps
void factor_integer(int i, map<int, int>& pps) {
Assert(i <= n);
pps.clear();
while (i > 1) {
pps[d[i]]++;
i /= d[i];
}
}
};
//O(σ(n))
/*
* n pps n divs
*/
template <class T> void divisors(map<T, int>& pps, vector<T>& divs) {
// verify : https://atcoder.jp/contests/arc068/tasks/arc068_c
divs = vector<T>({ T(1) });
repe(pp, pps) {
T p; int d;
tie(p, d) = pp;
vector<T> powp(d);
powp[0] = p;
rep(i, d - 1) powp[i + 1] = powp[i] * p;
int m = sz(divs);
repir(j, m - 1, 0) {
rep(i, d) {
divs.push_back(divs[j] * powp[i]);
}
}
}
sort(all(divs));
}
//O(n log(log n))
/*
* n ps
*/
void eratosthenes(int n, vi& ps) {
// verify : https://algo-method.com/tasks/330
ps.clear();
//
vb is_prime(n + 1, true);
is_prime[0] = is_prime[1] = false;
int i = 2;
// √n i
for (; i <= n / i; i++) {
if (is_prime[i]) {
ps.push_back(i);
for (int j = i * i; j <= n; j += i) {
is_prime[j] = false;
}
}
}
// √n i
for (; i <= n; i++) {
if (is_prime[i]) ps.push_back(i);
}
}
//GCD
/*
* Multiple_transform<T>(int n) : O(n log(log n))
* n
*
* multiple_zeta(vT& a) : O(n log(log n))
* A[j] = Σ_(j | i) a[i] A
*
*
* multiple_mobius(vT& A) : O(n log(log n))
* A[j] = Σ_(j | i) a[i] a
*
*
* vT gcd_convolution(vT a, vT b) : O(n log(log n))
* c[k] = Σ_(gcd(i, j) = k) a[i] b[j] c
*
* 1-indexed a[0], b[0] 使
*
*
*/
template <typename T> struct Multiple_transform {
// : https://qiita.com/convexineq/items/afc84dfb9ee4ec4a67d5
// verify : https://judge.yosupo.jp/problem/gcd_convolution
vi ps; //
Multiple_transform() {}
Multiple_transform(int n) { eratosthenes(n, ps); }
void multiple_zeta(vector<T>& f) {
//
// A[1] = a[1] + a[2] + a[3] + a[4] + a[5] + a[6] + a[7] + a[8] + ...
// A[2] = a[2] + a[4] + a[6] + a[8] + ...
// A[3] = a[3] + a[6] + ...
// A[4] = a[4] + a[8] + ...
// A[5] = a[5] + ...
// A[6] = a[6] + ...
// A[7] = a[7] + ...
// A[8] = a[8] + ...
int n = sz(f);
//
repe(p, ps) {
repir(i, (n - 1) / p, 1) f[i] += f[p * i];
}
}
void multiple_mobius(vector<T>& f) {
int n = sz(f);
//
repe(p, ps) {
repi(i, 1, (n - 1) / p) f[i] -= f[p * i];
}
}
vector<T> gcd_convolution(vector<T> a, vector<T> b) {
int n = sz(a);
// min gcd min
multiple_zeta(a); multiple_zeta(b);
rep(i, n) a[i] *= b[i];
multiple_mobius(a);
return a;
}
};
void WA() {
int n;
cin >> n;
vi a(n);
cin >> a;
int m = (int)1e6; m = 20;
Factor_integer fi(m);
vvm cnt(m + 1, vm{ 1, 0 }); vi l(m + 1, 0);
vm pow2(n + 1);
pow2[0] = 1;
rep(i, n) pow2[i + 1] = pow2[i] * 2;
Multiple_transform<mint> mt(m);
rep(i, n) {
map<int, int> pps;
fi.factor_integer(a[i], pps);
vi divs;
divisors(pps, divs);
repe(d, divs) {
// d
if (l[d] < i) {
cnt[d][0] = cnt[d][0] * pow2[i - l[d]] + cnt[d][1] * (pow2[i - l[d]] - 1);
}
// a[i]
cnt[d][1] += cnt[d][0];
l[d] = i + 1;
}
}
dump(cnt); dump(l);
repi(d, 1, m) {
int i = n;
if (l[d] < i) {
cnt[d][0] = cnt[d][0] * pow2[i - l[d]] + cnt[d][1] * (pow2[i - l[d]] - 1);
}
}
dump(cnt);
vm seq(m + 1);
repi(i, 1, m) seq[i] = pow2[n] - (cnt[i][0] + cnt[i][1]);
dump(seq);
mt.multiple_mobius(seq);
dump(seq);
mint res = pow2[n] - 1 - seq[1];
cout << res << endl;
}
//
/*
* Limited_multiple_transform(vl ps, vl divs) : O(1)
* n n ps divs
* n
* σ(n) : n ω(n) : n
*
* multiple_zeta(umap<ll, T>& a) : O(σ(n) ω(n))
* A[j] = Σ_(j | i) a[i] A
*
*
* multiple_mobius(umap<ll, T>& A) : O(σ(n) ω(n))
* A[j] = Σ_(j | i) a[i] a
*
* umap<ll, T> gcd_convolution(umap<ll, T> a, umap<ll, T> b) : O(σ(n) ω(n))
* c[k] = Σ_(gcd(i, j) = k) a[i] b[j] c
*/
template <typename T> struct Limited_multiple_transform {
vi ps; // ps : n
vi divs; // divs : n
Limited_multiple_transform() {}
Limited_multiple_transform(const vi& ps_, const vi& divs_) : ps(ps_), divs(divs_) {}
void multiple_mobius(unordered_map<int, T>& f) {
// verify : https://atcoder.jp/contests/abc212/tasks/abc212_g
//
repe(p, ps) {
repe(d, divs) {
if (!f.count(p * d)) continue;
f[d] -= f[p * d];
}
}
}
};
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int n;
cin >> n;
vi a(n);
cin >> a;
rep(i, n) {
while (a[i] % 4 == 0) a[i] /= 2;
while (a[i] % 9 == 0) a[i] /= 3;
while (a[i] % 25 == 0) a[i] /= 5;
while (a[i] % 49 == 0) a[i] /= 7;
while (a[i] % 121 == 0) a[i] /= 11;
}
int m = (int)1e6; // m = 20;
vm acc(m + 1);
mint sum = 0;
Factor_integer fi(m);
rep(i, n) {
dump("----"); dump(i);
map<int, int> pps;
fi.factor_integer(a[i], pps);
vi divs;
divisors(pps, divs);
vi ps;
repe(pp, pps) ps.emplace_back(pp.first);
Limited_multiple_transform<mint> lmt(ps, divs);
unordered_map<int, mint> a;
repe(d, divs) a[d] = acc[d];
dump(a);
lmt.multiple_mobius(a);
dump(a);
mint dp = 1 + sum - a[1];
repe(d, divs) acc[d] += dp;
sum += dp;
// dump(acc); dump(sum); dump(dp);
}
cout << sum << endl;
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0