結果

問題 No.1973 Divisor Sequence
ユーザー milanis48663220milanis48663220
提出日時 2022-06-10 21:36:43
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 279 ms / 2,000 ms
コード長 4,210 bytes
コンパイル時間 1,259 ms
コンパイル使用メモリ 125,284 KB
実行使用メモリ 178,972 KB
最終ジャッジ日時 2024-09-21 07:27:32
合計ジャッジ時間 4,133 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
このコードへのチャレンジ
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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
6,812 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 161 ms
29,908 KB
testcase_03 AC 13 ms
6,944 KB
testcase_04 AC 105 ms
18,696 KB
testcase_05 AC 29 ms
16,612 KB
testcase_06 AC 98 ms
25,276 KB
testcase_07 AC 24 ms
6,944 KB
testcase_08 AC 59 ms
14,624 KB
testcase_09 AC 85 ms
16,624 KB
testcase_10 AC 105 ms
20,208 KB
testcase_11 AC 17 ms
6,944 KB
testcase_12 AC 82 ms
20,864 KB
testcase_13 AC 25 ms
8,192 KB
testcase_14 AC 62 ms
17,536 KB
testcase_15 AC 141 ms
21,832 KB
testcase_16 AC 135 ms
25,992 KB
testcase_17 AC 88 ms
17,236 KB
testcase_18 AC 14 ms
6,944 KB
testcase_19 AC 115 ms
21,768 KB
testcase_20 AC 27 ms
6,944 KB
testcase_21 AC 127 ms
30,204 KB
testcase_22 AC 111 ms
21,804 KB
testcase_23 AC 260 ms
178,972 KB
testcase_24 AC 279 ms
46,084 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 <iostream>
#include <algorithm>
#include <iomanip>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <tuple>
#include <cmath>
#include <numeric>
#include <functional>
#include <cassert>

#define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl;
#define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl;

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

using namespace std;
typedef long long ll;

template<typename T>
vector<vector<T>> vec2d(int n, int m, T v){
    return vector<vector<T>>(n, vector<T>(m, v));
}

template<typename T>
vector<vector<vector<T>>> vec3d(int n, int m, int k, T v){
    return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, v)));
}

template<typename T>
void print_vector(vector<T> v, char delimiter=' '){
    if(v.empty()) {
        cout << endl;
        return;
    }
    for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter;
    cout << v.back() << endl;
}

const ll MOD = 1000000007;

class ModInt{
    public:
    ll v;
    ModInt(ll _v = 0){
        if(_v < 0) _v = (_v%MOD)+MOD;
        if(_v >= MOD) _v %= MOD;
        v = _v;
    }
    ModInt operator+(ll n){
        return ModInt((v+n)%MOD);
    }
    ModInt operator-(ll n){
        return ModInt((v-n+MOD)%MOD);
    }
    ModInt operator*(ll n){
        if(n >= MOD) n %= MOD;
        return ModInt((v*n)%MOD);
    }
    ModInt operator/(ll n){
        return ModInt((ModInt(n).inv()*v).v%MOD);
    }

    ModInt &operator+=(ll n){
        v = (v+n)%MOD;
        return *this;
    }
    ModInt &operator-=(ll n){
        v = (v-n+MOD)%MOD;
        return *this;
    }
    ModInt &operator*=(ll n){
        v = (v*n+MOD)%MOD;
        return *this;
    }
    
    
    ModInt operator+(ModInt n){
        return ModInt((v+n.v)%MOD);
    }
    ModInt operator-(ModInt n){
        return ModInt((v-n.v+MOD)%MOD);
    }
    ModInt operator*(ModInt n){
        return ModInt((v*n.v)%MOD);
    }
    ModInt operator/(ModInt n){
        return ModInt((n.inv()*v).v%MOD);
    }

    ModInt &operator+=(ModInt n){
        v = (v+n.v)%MOD;
        return *this;
    }
    ModInt &operator-=(ModInt n){
        v = (v-n.v+MOD)%MOD;
        return *this;
    }
    ModInt &operator*=(ModInt n){
        v = (v*n.v)%MOD;
        return *this;
    }

    bool operator==(ModInt n){
        return v == n.v;
    }
    bool operator!=(ModInt n){
        return v != n.v;
    }
    ModInt &operator=(ll n){
        v = n%MOD;
        return *this;
    }

    ModInt inv(){
        if(v == 1) return ModInt(1);
        else return ModInt(MOD-ModInt(MOD%v).inv().v*(MOD/v)%MOD);
    }
};

ostream& operator<<(ostream& os, const ModInt& m){
    os << m.v;
    return os;
}

istream & operator >> (istream &in,  ModInt &m){
    in >> m.v;
    return in;
}

ModInt pow(ModInt a, ll n) {
    assert(n >= 0);
	ModInt ans = 1;
    while (n > 0) {
        if (n&1) ans = ans*a;
        a = a*a;
        n >>= 1;
    }
	return ans;
}

using P = pair<ll, int>;
using mint = ModInt;

vector<P> factorize(ll n){
    ll m = n;
    vector<P> ans;
    for(ll p = 2; p*p <= n; p++){
        if(m%p == 0){
            int cnt = 0;
            while(m%p == 0){
                cnt++;
                m /= p;
            }
            ans.push_back(P(p, cnt));
        }
    }
    if(m != 1){
        ans.push_back(P(m, 1));
    }
    return ans;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << setprecision(10) << fixed;
    int n; ll m; cin >> n >> m;
    auto facs = factorize(m);
    mint ans = 1;
    auto calc = [&](int c) -> mint{
        auto dp = vec2d(n+1, c+1, mint(0));
        dp[0][0] = 1;
        for(int i = 0; i < n; i++){
            mint sum = 0;
            for(int j = c; j >= 0; j--){
                sum += dp[i][c-j];
                dp[i+1][j] = sum;
            }
        }
        return accumulate(dp[n].begin(), dp[n].end(), mint(0));
    };
    for(auto [x, c]: facs) ans *= calc(c);
    cout << ans << endl;
}
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