結果
問題 | No.1084 積の積 |
ユーザー |
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提出日時 | 2020-06-20 13:17:43 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 50 ms / 2,000 ms |
コード長 | 4,368 bytes |
コンパイル時間 | 1,168 ms |
コンパイル使用メモリ | 123,140 KB |
最終ジャッジ日時 | 2025-01-11 08:37:47 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 27 |
ソースコード
#include <iostream>#include <string>#include <algorithm>#include <functional>#include <vector>#include <stack>#include <queue>#include <deque>#include <set>#include <map>#include <cstdio>#include <cmath>#include <tuple>#include <iomanip>#include <numeric>#include <unordered_map>#include <sstream>#include<limits.h>#include<float.h>#include<list>#include <array>#include <complex>#include<stdio.h>#include<string.h>#include <bitset>#include<assert.h>using namespace std;#define int long long#define I32_MAX 2147483647#define I64_MAX 9223372036854775807LL#define I64_MAX2 1223372036854775807LL#define INF I64_MAX2#define MOD 1000000007// #define MOD 998244353#define MEM_SIZE 10000#define DEBUG_OUT true#define ALL(x) (x).begin(), (x).end()template<typename T> void DEBUG(T e){if(DEBUG_OUT == false)return; std::cout << e <<" ";}template<typename T> void DEBUG(const std::vector<T>& v){if(DEBUG_OUT == false)return;for(const auto& e : v){std::cout<< e << " "; } std::cout << std::endl;}template<typename T> void DEBUG(const std::vector<std::vector<T> >& vv){if(DEBUG_OUT == false)return;for(const auto& v : vv){ DEBUG(v); } }template<class T,class... Ts> void DEBUG(T d, Ts... e){if(DEBUG_OUT == false)return;DEBUG(d);DEBUG(e...);}template <class T> void corner(bool flg, T hoge) {if (flg) {cout << hoge << endl; abort();}}template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }//-----CODE------//struct mint{int x; // typedef long long int;mint(int x = 0) : x((x % MOD + MOD) % MOD) {}mint &operator+=(const mint a){if ((x += a.x) >= MOD)x -= MOD;return *this;}mint &operator-=(const mint a){if ((x += MOD - a.x) >= MOD)x -= MOD;return *this;}mint &operator*=(const mint a){(x *= a.x) %= MOD;return *this;}mint operator+(const mint a) const{mint res(*this);return res += a;}mint operator-(const mint a) const{mint res(*this);return res -= a;}mint operator*(const mint a) const{mint res(*this);return res *= a;}mint pow(int t) const{if (!t)return 1;mint a = pow(t >> 1);a *= a;if (t & 1)a *= *this;return a;}// for prime MODmint inv() const{return pow(MOD - 2);}mint &operator/=(const mint a){return (*this) *= a.inv();}mint operator/(const mint a) const{mint res(*this);return res /= a;}};const int MAX = 510000;long long fac[MAX], finv[MAX], inv[MAX];// テーブルを作る前処理void COMinit(){fac[0] = fac[1] = 1;finv[0] = finv[1] = 1;inv[1] = 1;for (int i = 2; i < MAX; i++){fac[i] = fac[i - 1] * i % MOD;inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;finv[i] = finv[i - 1] * inv[i] % MOD;}}int COM(int n, int k){if (n < k)return 0;if (n < 0 || k < 0)return 0;return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;}int PERM(int n, int k){if (n < k)return 0;if (n < 0 || k < 0)return 0;return fac[n] * (finv[n - k] % MOD) % MOD;}int MCOM(int n, int k){//n個のものから重複を許してr個選ぶ。//Choose R from N types of things, allowing for duplication.return COM(n + k - 1, k);}//solvevoid solve(void){int N;cin>>N;vector<int> vec (2*N,INF);int check = 0;for (int i = 0; i < N; i++){cin>>vec[i];if(vec[i] == 0)check = 1;}if(check){cout<<0<<endl;return;}vec.push_back(1);mint res = 1;int R = 0;int MUL = 1;mint X = 1;for (int L = 0; L < N; L++){// DEBUG(R);while(MUL*vec[R] <1e9 && R <= N-1){X*=MUL;X *= vec[R];MUL *= vec[R];R++;}res *= X;// DEBUG(res.x);// DEBUG(R-L);if(R == L) R++;else{if(L >= N)return;mint p = vec[L];p = p.pow(R -L);X /= p;// res *= X;MUL /= vec[L];// DEBUG(res.x);}}cout<<res.x<<endl;return;}int32_t main(int32_t argc, const char *argv[]){std::ios::sync_with_stdio(false);std::cin.tie(0);std::cout << std::fixed;std::cout << std::setprecision(11);solve();return 0;}