結果

問題 No.1731 Product of Subsequence
ユーザー sapphire__15sapphire__15
提出日時 2021-11-06 07:49:53
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 657 ms / 2,000 ms
コード長 5,193 bytes
コンパイル時間 1,949 ms
コンパイル使用メモリ 150,128 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-11-08 04:58:18
合計ジャッジ時間 8,080 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
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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 499 ms
5,248 KB
testcase_01 AC 3 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 2 ms
5,248 KB
testcase_06 AC 3 ms
5,248 KB
testcase_07 AC 2 ms
5,248 KB
testcase_08 AC 18 ms
5,248 KB
testcase_09 AC 4 ms
5,248 KB
testcase_10 AC 653 ms
5,248 KB
testcase_11 AC 557 ms
5,248 KB
testcase_12 AC 3 ms
5,248 KB
testcase_13 AC 13 ms
5,248 KB
testcase_14 AC 493 ms
5,248 KB
testcase_15 AC 2 ms
5,248 KB
testcase_16 AC 2 ms
5,248 KB
testcase_17 AC 2 ms
5,248 KB
testcase_18 AC 400 ms
5,248 KB
testcase_19 AC 12 ms
5,248 KB
testcase_20 AC 326 ms
5,248 KB
testcase_21 AC 657 ms
5,248 KB
testcase_22 AC 4 ms
5,248 KB
testcase_23 AC 4 ms
5,248 KB
testcase_24 AC 12 ms
5,248 KB
testcase_25 AC 6 ms
5,248 KB
testcase_26 AC 102 ms
5,248 KB
testcase_27 AC 135 ms
5,248 KB
testcase_28 AC 291 ms
5,248 KB
testcase_29 AC 116 ms
5,248 KB
testcase_30 AC 519 ms
5,248 KB
testcase_31 AC 4 ms
5,248 KB
testcase_32 AC 2 ms
5,248 KB
testcase_33 AC 4 ms
5,248 KB
testcase_34 AC 42 ms
5,248 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 <algorithm>
#include <cassert>
#include <climits>
#include <cmath>
#include <iostream>
#include <iterator>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <random>
#include <complex>
#include <bitset>
#include <iomanip>
#include <memory>
#include <chrono>
#include <functional>

#define rep(i, n, s) for(int i = (s); i < int(n); i++)
#define per(i, n, s) for(int i = (n - 1); i >= int(s); i--)
#define MM << " " <<
#define all(x) x.begin(), x.end()
#define rall(x) rbegin(x), rend(x)

template <class T>
using MinHeap = std::priority_queue<T, std::vector<T>, std::greater<T>>;
template <class T>
using MaxHeap = std::priority_queue<T>;

using ll = long long;
using Pii = std::pair<int, int>;
using Pll = std::pair<ll, ll>;
using Pdd = std::pair<double, double>;

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

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

template <class T>
void vdeb(const std::vector<T> &da) {
    auto n = da.size();
    for (size_t i = 0; i < n; i++) {
        if (i == n - 1)
            std::cout << da[i];
        else
            std::cout << da[i] << " ";
    }
    std::cout << std::endl;
}
template<class T>
void vdeb(const std::vector<std::vector<T>> &da) {
    auto n = da.size();
    for (size_t i = 0; i < n; i++) {
        std::cout << i << " : ";
        vdeb(da[i]);
    }
    std::cout << std::endl;
}

template <>
void vdeb(const std::vector<std::string> &da) {
    auto n = da.size();
    for (size_t i = 0; i < n; i++) { std::cout << da[i] << std::endl; }
}

using namespace std;

struct modint {
    long long num;
    const static long long p = 1000000007;
    constexpr static long long pow(long long n, long long k) {//n^k(mod p)
        long long ret = 1;
        while(k) {
            if(k&1) ret = ret * n % p;
            n = n * n % p;
            k >>= 1;
        }
        return ret;
    }
    // a*A + b*B = 1
    constexpr static void euclid(long long &a, long long &b) { // a>=b A*b+B*(a-a/b*b)=1
        if (a == 1) {
            a = 1;
        }
        else {
            long long A = b, B = a % b;
            euclid(A, B);
            b = (A - (p + a / b) % p * B % p + p) % p;
            a = B;
        }
    }
    constexpr static long long rev(const long long n) {// n*x-p*y=1
        //long long q = p;
        //euclid(p, n, p);
        //return n % q;
        return pow(n,p-2);
    }
    constexpr modint() : num(0) {}
    constexpr modint(long long x) : num(x%p < 0 ? x%p+p : x%p) {}
    constexpr modint inv() const {return rev(num);}
    modint operator-() const {return modint(p-num);}
    modint& operator+=(const modint &other){
        num = (num + other.num) % p;
        return *this;
    }
    modint& operator-=(const modint &other){
        num = (num - other.num + p) % p;
        return *this;
    }
    modint& operator*=(const modint &other){
        num = (num * other.num) % p;
        return *this;
    }
    modint& operator/=(const modint &other){
        (*this) *= other.inv();
        return *this;
    }
    modint& operator+=(const long long &other){
        num = (num + other) % p;
        return *this;
    }
    modint& operator-=(const long long &other){
        num = (num - other + p) % p;
        return *this;
    }
    modint& operator*=(const long long &other){
        num = (num * other) % p;
        return *this;
    }
    modint& operator/=(const long long &other){
        (*this) *= rev(other);
        return *this;
    }
    modint& operator++(){return *this += 1;}
    modint& operator--(){return *this -= 1;}
    modint& operator=(const long long &other){return (*this) = modint(other);}
    modint operator+(const modint &other) const{return modint(*this) += other;}
    modint operator-(const modint &other) const{return modint(*this) -= other;}
    modint operator*(const modint &other) const{return modint(*this) *= other;}
    modint operator/(const modint &other) const{return modint(*this) /= other;}
    modint operator+(const long long &other) const{return modint(*this) += other;}
    modint operator-(const long long &other) const{return modint(*this) -= other;}
    modint operator*(const long long &other) const{return modint(*this) *= other;}
    modint operator/(const long long &other) const{return modint(*this) /= other;}
    bool operator==(const modint &other) const{return num == other.num;}
};
std::istream& operator>>(std::istream &is, modint x) {
    is >> x.num;
    return is;
}
std::ostream& operator<<(std::ostream &os, const modint &x){
    os << x.num;
    return os;
}

int main() {
    ll n, k; cin >> n >> k;
    vector<ll> da(n);
    rep(i,n,0) cin >> da[i];
    map<ll, modint> mp;
    mp[k] = 1;
    rep(j,n,0) {
        auto nxt = mp;
        for(auto &i : mp) {
            auto g = gcd(i.first, da[j]);
            nxt[i.first / g] += i.second;
        }
        swap(mp, nxt);
    }
    cout << (k == 1 ? mp[1] -1 : mp[1]) << endl;
}
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