結果

問題 No.1532 Different Products
ユーザー haruki_Kharuki_K
提出日時 2021-06-04 21:29:04
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 1,574 ms / 4,000 ms
コード長 6,270 bytes
コンパイル時間 2,497 ms
コンパイル使用メモリ 213,212 KB
実行使用メモリ 479,500 KB
最終ジャッジ日時 2023-08-12 11:45:08
合計ジャッジ時間 55,114 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge13
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
4,380 KB
testcase_01 AC 187 ms
79,484 KB
testcase_02 AC 2 ms
4,380 KB
testcase_03 AC 2 ms
4,380 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 1 ms
4,380 KB
testcase_06 AC 3 ms
4,380 KB
testcase_07 AC 3 ms
4,384 KB
testcase_08 AC 8 ms
6,544 KB
testcase_09 AC 83 ms
43,656 KB
testcase_10 AC 248 ms
108,476 KB
testcase_11 AC 201 ms
88,564 KB
testcase_12 AC 633 ms
238,760 KB
testcase_13 AC 417 ms
171,148 KB
testcase_14 AC 1,201 ms
393,752 KB
testcase_15 AC 72 ms
47,052 KB
testcase_16 AC 216 ms
89,660 KB
testcase_17 AC 236 ms
103,416 KB
testcase_18 AC 195 ms
93,592 KB
testcase_19 AC 608 ms
230,180 KB
testcase_20 AC 1,192 ms
398,428 KB
testcase_21 AC 330 ms
128,912 KB
testcase_22 AC 385 ms
159,188 KB
testcase_23 AC 265 ms
123,204 KB
testcase_24 AC 1,120 ms
367,116 KB
testcase_25 AC 557 ms
204,820 KB
testcase_26 AC 65 ms
31,640 KB
testcase_27 AC 473 ms
174,096 KB
testcase_28 AC 354 ms
137,444 KB
testcase_29 AC 254 ms
105,624 KB
testcase_30 AC 635 ms
232,444 KB
testcase_31 AC 665 ms
237,732 KB
testcase_32 AC 792 ms
276,248 KB
testcase_33 AC 579 ms
212,856 KB
testcase_34 AC 1,012 ms
343,292 KB
testcase_35 AC 773 ms
274,792 KB
testcase_36 AC 979 ms
333,612 KB
testcase_37 AC 118 ms
54,820 KB
testcase_38 AC 1,091 ms
357,096 KB
testcase_39 AC 905 ms
317,488 KB
testcase_40 AC 972 ms
324,408 KB
testcase_41 AC 1,534 ms
465,724 KB
testcase_42 AC 1,313 ms
412,196 KB
testcase_43 AC 1,400 ms
432,844 KB
testcase_44 AC 1,574 ms
471,616 KB
testcase_45 AC 1,522 ms
472,720 KB
testcase_46 AC 1,452 ms
458,312 KB
testcase_47 AC 1,547 ms
478,996 KB
testcase_48 AC 1,508 ms
472,116 KB
testcase_49 AC 1,470 ms
474,748 KB
testcase_50 AC 1,482 ms
471,324 KB
testcase_51 AC 1,510 ms
476,132 KB
testcase_52 AC 1,462 ms
467,240 KB
testcase_53 AC 1,511 ms
477,916 KB
testcase_54 AC 1,555 ms
468,004 KB
testcase_55 AC 1,520 ms
473,940 KB
testcase_56 AC 1,467 ms
457,712 KB
testcase_57 AC 1,472 ms
461,504 KB
testcase_58 AC 1,538 ms
469,836 KB
testcase_59 AC 1,432 ms
443,104 KB
testcase_60 AC 1,572 ms
479,500 KB
testcase_61 AC 2 ms
4,380 KB
testcase_62 AC 1 ms
4,380 KB
testcase_63 AC 1,482 ms
473,888 KB
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 # 

// >>> TEMPLATES
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using i32 = int32_t;
using i64 = int64_t;
using u32 = uint32_t;
using u64 = uint64_t;
#define int ll
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep1(i, n) for (int i = 1; i <= (int)(n); i++)
#define repR(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep1R(i, n) for (int i = (int)(n); i >= 1; i--)
#define loop(i, a, B) for (int i = a; i B; i++)
#define loopR(i, a, B) for (int i = a; i B; i--)
#define all(x) begin(x), end(x)
#define allR(x) rbegin(x), rend(x)
#define rng(x, l, r) begin(x) + (l), begin(x) + (r)
#define pb push_back
#define eb emplace_back
#define fst first
#define snd second
template <class A, class B> constexpr auto mp(A &&a, B &&b) { return make_pair(forward<A>(a), forward<B>(b)); }
template <class... T> constexpr auto mt(T&&... x) { return make_tuple(forward<T>(x)...); }
template <class Int> auto constexpr inf_ = numeric_limits<Int>::max()/2-1;
auto constexpr INF32 = inf_<int32_t>;
auto constexpr INF64 = inf_<int64_t>;
auto constexpr INF   = inf_<int>;
#ifdef LOCAL
#include "debug.hpp"
#else
#define dump(...) (void)(0)
#define say(x) (void)(0)
#define debug if (0)
#endif
template <class T, class Comp> struct pque : priority_queue<T, vector<T>, Comp> { vector<T> &data() { return this->c; } void clear() { this->c.clear(); } };
template <class T> using pque_max = pque<T, less<T>>;
template <class T> using pque_min = pque<T, greater<T>>;
template <class T, class = typename T::iterator, enable_if_t<!is_same<T, string>::value, int> = 0>
ostream& operator<<(ostream& os, T const& a) { bool f = true; for (auto const& x : a) os << (f ? "" : " ") << x, f = false; return os; }
template <class T, size_t N, enable_if_t<!is_same<T, char>::value, int> = 0>
ostream& operator<<(ostream& os, const T (&a)[N]) { bool f = true; for (auto const& x : a) os << (f ? "" : " ") << x, f = false; return os; }
template <class T, class = decltype(begin(declval<T&>())), class = typename enable_if<!is_same<T, string>::value>::type>
istream& operator>>(istream& is, T &a) { for (auto& x : a) is >> x; return is; }
template <class T, class S> ostream& operator<<(ostream& os, pair<T, S> const& p) { return os << p.first << " " << p.second; }
template <class T, class S> istream& operator>>(istream& is, pair<T, S>& p) { return is >> p.first >> p.second; }
struct IOSetup { IOSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } iosetup;
template <class F> struct FixPoint : private F {
    constexpr FixPoint(F&& f) : F(forward<F>(f)) {}
    template <class... T> constexpr auto operator()(T&&... x) const { return F::operator()(*this, forward<T>(x)...); }
};
struct MakeFixPoint { template <class F> constexpr auto operator|(F&& f) const { return FixPoint<F>(forward<F>(f)); } };
#define MFP MakeFixPoint()|
#define def(name, ...) auto name = MFP [&](auto &&name, __VA_ARGS__)
template <class T, size_t d> struct vec_impl {
    using type = vector<typename vec_impl<T, d-1>::type>;
    template <class... U> static type make_v(size_t n, U&&... x) { return type(n, vec_impl<T, d-1>::make_v(forward<U>(x)...)); }
};
template <class T> struct vec_impl<T, 0> { using type = T; static type make_v(T const& x = {}) { return x; } };
template <class T, size_t d = 1> using vec = typename vec_impl<T, d>::type;
template <class T, size_t d = 1, class... Args> auto make_v(Args&&... args) { return vec_impl<T, d>::make_v(forward<Args>(args)...); }
template <class T> void quit(T const& x) { cout << x << endl; exit(0); }
template <class T, class U> constexpr bool chmin(T& x, U const& y) { if (x > (T)y) { x = (T)y; return true; } return false; }
template <class T, class U> constexpr bool chmax(T& x, U const& y) { if (x < (T)y) { x = (T)y; return true; } return false; }
template <class It> constexpr auto sumof(It b, It e) { return accumulate(b, e, typename iterator_traits<It>::value_type{}); }
template <class T> int sz(T const& x) { return x.size(); }
template <class C, class T> int lbd(C const& v, T const& x) { return lower_bound(begin(v), end(v), x)-begin(v); }
template <class C, class T> int ubd(C const& v, T const& x) { return upper_bound(begin(v), end(v), x)-begin(v); }
constexpr int64_t mod(int64_t x, int64_t m) { assert(m > 0); return (x %= m) < 0 ? x+m : x; }
constexpr int64_t div_floor(int64_t x, int64_t y) { assert(y != 0); return x/y - ((x^y) < 0 and x%y); }
constexpr int64_t div_ceil(int64_t x, int64_t y) { assert(y != 0); return x/y + ((x^y) > 0 and x%y); }
constexpr int dx[] = { 1, 0, -1, 0, 1, -1, -1, 1 };
constexpr int dy[] = { 0, 1, 0, -1, 1, 1, -1, -1 };
constexpr int popcnt(ll x) { return __builtin_popcountll(x); }
mt19937_64 seed_{random_device{}()};
template <class Int> Int rand(Int a, Int b) { return uniform_int_distribution<Int>(a, b)(seed_); }
i64 irand(i64 a, i64 b) { return rand<i64>(a, b); } // [a, b]
u64 urand(u64 a, u64 b) { return rand<u64>(a, b); } //
template <class It> void shuffle(It l, It r) { shuffle(l, r, seed_); }
template <class T> vector<T> &operator--(vector<T> &v) { for (T &x : v) --x; return v; }
template <class T> vector<T> &operator++(vector<T> &v) { for (T &x : v) ++x; return v; }
// <<<
vector<int> quotients(int n) {
    assert(n > 0);
    static vector<int> ret;
    ret.clear();
    uint64_t m = n, x = 1;
    for ( ; x*x <= m; x++) ret.push_back(m/x);
    x--;
    if (m/x == x) x--;
    for ( ; x > 0; x--) ret.push_back(x);
    return ret;
}

int32_t main() {
    int N, K; cin >> N >> K;

    auto a = quotients(K);
    a.eb(0);
    reverse(all(a));

    auto nxt = make_v<i32, 2>(N+1, a.size());
    rep1 (x, N) {
        int r = 0;
        rep (idx, a.size()) {
            int val = u64(a[idx])/u32(x);
            while (r < sz(a) and a[r] < val) r++;
            nxt[x][idx] = r;
        }
    }

    auto dp = make_v<int, 2>(N+1, a.size(), -1);
    def (solve, int n, int idx) -> int {
        int &res = dp[n][idx];
        if (res >= 0) return res;
        res = 0;
        if (idx == 0) {
            return res = 0;
        } else {
            res++;
            rep1 (x, n) res += solve(x-1, nxt[x][idx]);
            return res;
        }
    };
    cout << solve(N, a.size()-1)-1 << '\n';

}
0