結果
| 問題 |
No.2857 Div Array
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-08-27 01:38:05 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 33 ms / 2,000 ms |
| コード長 | 4,290 bytes |
| コンパイル時間 | 7,888 ms |
| コンパイル使用メモリ | 458,796 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-08-27 01:38:15 |
| 合計ジャッジ時間 | 7,851 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
ソースコード
#include "bits/stdc++.h"
#include <stdio.h>
#include <math.h>
#include "atcoder/all"
#include <float.h>
#include <boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
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 _ttt; cin >> _ttt; while(_ttt--)
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using dl = deque<ll>;
#define VLI(a, n) vector<ll> a; a.assign(n, 0); for(auto& x : a) cin >> x;
#define DLI(a, n) deque<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;
#define VVLI(a, n, m, init) vector<vector<ll>> a(n); for(auto& x : a) x.assign(m, init);
using vd = vector<double>; using pl = pair<ll, ll>; using vpl = vector<pl>;
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>;
ostream& operator<<(ostream& os, const mint& v) { os << v.val(); return os; }
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 << 62; //十分でかいが多少足しても溢れない数値
auto gmax(const auto& a, const auto& b) { return a > b ? a : b; };
auto gmin(const auto& a, const auto& b) { return a < b ? a : b; };
bool chmin(auto& a, const auto& b) { const auto olda = a; a = gmin(a, b); return olda != a; }
bool chmax(auto& a, const auto& b) { const auto olda = a; a = gmax(a, b); return olda != a; }
void sort(auto& v) { std::ranges::sort(v); };
void rev(auto& v) { std::ranges::reverse(v); };
template<class T> auto p_sum(const T& v) { T ret(v.size()); std::partial_sum(begin(v), end(v), ret.begin()); return ret; };
template<class T, class K = T::key_type, class V = T::mapped_type> [[nodiscard]] V myat(const T& mp, const K& key) { return mp.find(key) == mp.end() ? V() : mp.at(key); }
long long ceil(const long long a, const long long b) { return (a + b - 1) / b; }
using mat_row = vector<mint>;
using mat = vector<mat_row>;
mat make_mat(ll size, mint init = 0) {
return mat(size, mat_row(size, init));
}
mat operator*(const mat& a, const mat& b) {
mat c(a.size(), mat_row(b[0].size()));
for (size_t i = 0; i < c.size(); ++i)
for (size_t j = 0; j < c[0].size(); ++j)
for (size_t k = 0; k < a[0].size(); ++k)
c[i][j] += a[i][k] * b[k][j];
return c;
}
mat pow(mat a, ll n) {
mat res(a.size(), mat_row(a[0].size()));
for (size_t i = 0; i < res.size(); ++i) res[i][i] = 1;
for (; n; n /= 2) {
if (n & 1) res = res * a;
a = a * a;
}
return res;
}
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
ll n, m, k;
cin >> n >> m >> k;
map<ll, ll> mp;
REP(i, m) mp[m / (i + 1)] = 0;
ll cnt = 0;
for(auto& x : mp) x.second = cnt++;
auto mt = make_mat(cnt, mint(0));
REPE(e, mp) {
REP(j, m) {
if (abs(e.first - m / (j + 1)) <= k) {
mt[e.second][mp[m / (j + 1)]] += 1;
}
}
}
auto pmt = pow(mt, n - 1);
mint ans = 0;
REP(i, m) {
REPE(e, pmt[mp[m / (i + 1)]]) ans += e;
}
cout << ans << endl;
}