結果

問題 No.1532 Different Products
ユーザー torisasami4torisasami4
提出日時 2021-06-04 21:38:50
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 897 ms / 4,000 ms
コード長 5,197 bytes
コンパイル時間 2,100 ms
コンパイル使用メモリ 185,512 KB
実行使用メモリ 26,140 KB
最終ジャッジ日時 2023-08-12 12:11:28
合計ジャッジ時間 35,491 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge14
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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 1 ms
4,380 KB
testcase_01 AC 156 ms
10,288 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 1 ms
4,376 KB
testcase_04 AC 2 ms
4,380 KB
testcase_05 AC 2 ms
4,380 KB
testcase_06 AC 3 ms
4,376 KB
testcase_07 AC 4 ms
4,380 KB
testcase_08 AC 10 ms
4,560 KB
testcase_09 AC 104 ms
11,632 KB
testcase_10 AC 222 ms
15,064 KB
testcase_11 AC 174 ms
13,908 KB
testcase_12 AC 514 ms
19,824 KB
testcase_13 AC 364 ms
24,504 KB
testcase_14 AC 856 ms
21,428 KB
testcase_15 AC 148 ms
23,600 KB
testcase_16 AC 158 ms
8,672 KB
testcase_17 AC 227 ms
16,224 KB
testcase_18 AC 225 ms
19,044 KB
testcase_19 AC 508 ms
20,776 KB
testcase_20 AC 745 ms
24,088 KB
testcase_21 AC 248 ms
10,316 KB
testcase_22 AC 360 ms
19,004 KB
testcase_23 AC 270 ms
23,932 KB
testcase_24 AC 839 ms
21,716 KB
testcase_25 AC 413 ms
16,548 KB
testcase_26 AC 70 ms
7,492 KB
testcase_27 AC 356 ms
11,796 KB
testcase_28 AC 299 ms
12,156 KB
testcase_29 AC 194 ms
8,164 KB
testcase_30 AC 444 ms
14,216 KB
testcase_31 AC 470 ms
14,648 KB
testcase_32 AC 571 ms
16,104 KB
testcase_33 AC 400 ms
13,764 KB
testcase_34 AC 720 ms
19,492 KB
testcase_35 AC 537 ms
16,144 KB
testcase_36 AC 684 ms
18,404 KB
testcase_37 AC 93 ms
5,712 KB
testcase_38 AC 751 ms
20,020 KB
testcase_39 AC 648 ms
18,436 KB
testcase_40 AC 660 ms
18,980 KB
testcase_41 AC 884 ms
25,892 KB
testcase_42 AC 766 ms
23,584 KB
testcase_43 AC 842 ms
24,544 KB
testcase_44 AC 896 ms
25,916 KB
testcase_45 AC 897 ms
25,728 KB
testcase_46 AC 860 ms
25,136 KB
testcase_47 AC 895 ms
25,852 KB
testcase_48 AC 875 ms
25,780 KB
testcase_49 AC 879 ms
25,772 KB
testcase_50 AC 876 ms
25,920 KB
testcase_51 AC 892 ms
25,808 KB
testcase_52 AC 875 ms
25,652 KB
testcase_53 AC 890 ms
25,940 KB
testcase_54 AC 870 ms
25,688 KB
testcase_55 AC 889 ms
25,764 KB
testcase_56 AC 845 ms
25,172 KB
testcase_57 AC 856 ms
25,528 KB
testcase_58 AC 877 ms
25,652 KB
testcase_59 AC 813 ms
24,508 KB
testcase_60 AC 888 ms
26,140 KB
testcase_61 AC 2 ms
4,376 KB
testcase_62 AC 1 ms
4,380 KB
testcase_63 AC 873 ms
25,884 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 # 

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb(x) push_back(x)
#define mp(a, b) make_pair(a, b)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define lscan(x) scanf("%I64d", &x)
#define lprint(x) printf("%I64d", x)
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define rep2(i, n) for (ll i = (ll)n - 1; i >= 0; i--)
#define REP(i, l, r) for (ll i = l; i < (r); i++)
#define REP2(i, l, r) for (ll i = (ll)r - 1; i >= (l); i--)
#define siz(x) (ll)x.size()
template <class T>
using rque = priority_queue<T, vector<T>, greater<T>>;
const ll mod = (int)1e9 + 7;

template <class T>
bool chmin(T &a, const T &b) {
    if (b < a) {
        a = b;
        return 1;
    }
    return 0;
}

template <class T>
bool chmax(T &a, const T &b) {
    if (b > a) {
        a = b;
        return 1;
    }
    return 0;
}

ll gcd(ll a, ll b)
{
	if(a == 0)
		return b;
	if(b == 0)
		return a;
	ll c = a % b;
	while (c != 0)
	{
		a = b;
		b = c;
		c = a % b;
	}
	return b;
}

long long extGCD(long long a, long long b, long long &x, long long &y)
{
	if (b == 0)
	{
		x = 1;
		y = 0;
		return a;
	}
	long long d = extGCD(b, a % b, y, x);
	y -= a / b * x;
	return d;
}

struct UnionFind
{
	vector<ll> data;
	int num;

	UnionFind(int sz)
	{
		data.assign(sz, -1);
		num = sz;
	}

	bool unite(int x, int y)
	{
		x = find(x), y = find(y);
		if (x == y)
			return (false);
		if (data[x] > data[y])
			swap(x, y);
		data[x] += data[y];
		data[y] = x;
		num--;
		return (true);
	}

	int find(int k)
	{
		if (data[k] < 0)
			return (k);
		return (data[k] = find(data[k]));
	}

	ll size(int k)
	{
		return (-data[find(k)]);
	}
};

ll M = 1000000007;

template <int mod>
struct ModInt
{
	int x;

	ModInt() : x(0) {}

	ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

	ModInt &operator+=(const ModInt &p)
	{
		if ((x += p.x) >= mod)
			x -= mod;
		return *this;
	}

	ModInt &operator-=(const ModInt &p)
	{
		if ((x += mod - p.x) >= mod)
			x -= mod;
		return *this;
	}

	ModInt &operator*=(const ModInt &p)
	{
		x = (int)(1LL * x * p.x % mod);
		return *this;
	}

	ModInt &operator/=(const ModInt &p)
	{
		*this *= p.inverse();
		return *this;
	}

	ModInt operator-() const { return ModInt(-x); }

	ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }

	ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }

	ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }

	ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }

	bool operator==(const ModInt &p) const { return x == p.x; }

	bool operator!=(const ModInt &p) const { return x != p.x; }

	ModInt inverse() const
	{
		int a = x, b = mod, u = 1, v = 0, t;
		while (b > 0)
		{
			t = a / b;
			swap(a -= t * b, b);
			swap(u -= t * v, v);
		}
		return ModInt(u);
	}

	ModInt pow(int64_t n) const
	{
		ModInt ret(1), mul(x);
		while (n > 0)
		{
			if (n & 1)
				ret *= mul;
			mul *= mul;
			n >>= 1;
		}
		return ret;
	}

	friend ostream &operator<<(ostream &os, const ModInt &p)
	{
		return os << p.x;
	}

	friend istream &operator>>(istream &is, ModInt &a)
	{
		int64_t t;
		is >> t;
		a = ModInt<mod>(t);
		return (is);
	}

	static int get_mod() { return mod; }
};

using mint = ModInt<mod>;

mint mpow(ll x, ll n)
{
	mint ans = 1;
	while (n != 0)
	{
		if (n & 1)
			ans *= x;
		x = x * x % mod;
		n = n >> 1;
	}
	return ans;
}

ll mpow2(ll x, ll n, ll mod)
{
	ll ans = 1;
	while (n != 0)
	{
		if (n & 1)
			ans = ans * x % mod;
		x = x * x % mod;
		n = n >> 1;
	}
	return ans;
}

vector<mint> fac;
vector<mint> ifac;

void setcomb(int sz = 2000010)
{
	fac.assign(sz + 1, 0);
	ifac.assign(sz + 1, 0);
	fac[0] = 1;
	for (ll i = 0; i < sz; i++)
	{
		fac[i + 1] = fac[i] * (i + 1); // n!(mod M)
	}
	ifac[sz] = fac[sz].inverse();
	for (ll i = sz; i > 0; i--)
	{
		ifac[i - 1] = ifac[i] * i;
	}
}
mint comb(ll a, ll b)
{
	if(fac.size() == 0)
		setcomb();
	if (a == 0 && b == 0)
		return 1;
	if (a < b || a < 0)
		return 0;
	return ifac[a - b] * ifac[b] * fac[a];
}

mint perm(ll a, ll b)
{
	if(fac.size() == 0)
		setcomb();
	if (a == 0 && b == 0)
		return 1;
	if (a < b || a < 0)
		return 0;
	return fac[a] * ifac[a - b];
}

long long modinv(long long a)
{
	long long b = M, u = 1, v = 0;
	while (b)
	{
		long long t = a / b;
		a -= t * b;
		swap(a, b);
		u -= t * v;
		swap(u, v);
	}
	u %= M;
	if (u < 0)
		u += M;
	return u;
}

ll modinv2(ll a, ll mod)
{
	ll b = mod, u = 1, v = 0;
	while (b)
	{
		ll t = a / b;
		a -= t * b;
		swap(a, b);
		u -= t * v;
		swap(u, v);
	}
	u %= mod;
	if (u < 0)
		u += mod;
	return u;
}

int main(){
	ios::sync_with_stdio(false);
	std::cin.tie(nullptr);

	ll n, k;
	cin >> n >> k;
	set<ll> li;
	ll ma = 1e12;
	for (ll i = 1; i * i <= k; i++){
		if(k/(i+1) < k/i){
			li.insert(i);
			ma = i;
		}
	}
	for (ll i = 1;; i++){
		if(k/i <= ma)
			break;
		li.insert(k / i);
	}
	vector<ll> v;
	v.pb(0);
	for (auto &e : li)
		v.pb(e);
	ll num = v.size();
	unordered_map<ll, ll> mp;
	rep(i, num) mp[v[i]] = i;
	ll dp[num], ndp[num];
	rep(i, num) dp[i] = 1;
	dp[0] = 0;
	rep(i,n){
		rep(j, num) ndp[j] = dp[j] + dp[mp[v[j] / (i + 1)]];
		rep(j, num) dp[j] = ndp[j];
	}
	cout << dp[num - 1] - 1 << endl;
}
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