#367553 (C++14) No.856 増える演算

提出ソース

結果

問題	No.856 増える演算
ユーザー	fumiphys
提出日時	2019-08-10 16:37:25
言語	C++14 (gcc 12.3.0 + boost 1.83.0)
結果	WA
実行時間	-
コード長	7,036 bytes
コンパイル時間	2,486 ms
コンパイル使用メモリ	179,216 KB
実行使用メモリ	17,744 KB
最終ジャッジ日時	2023-09-26 23:24:35
合計ジャッジ時間	18,497 ms
ジャッジサーバーID （参考情報）	judge13 / judge14

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	140 ms 16,940 KB
testcase_01	AC	140 ms 16,904 KB
testcase_02	AC	139 ms 16,772 KB
testcase_03	AC	142 ms 16,832 KB
testcase_04	AC	139 ms 16,884 KB
testcase_05	AC	140 ms 16,772 KB
testcase_06	AC	141 ms 16,764 KB
testcase_07	AC	141 ms 16,876 KB
testcase_08	AC	140 ms 16,772 KB
testcase_09	AC	140 ms 16,772 KB
testcase_10	AC	140 ms 16,752 KB
testcase_11	AC	140 ms 16,760 KB
testcase_12	AC	141 ms 16,880 KB
testcase_13	AC	139 ms 16,920 KB
testcase_14	AC	138 ms 16,764 KB
testcase_15	AC	141 ms 16,776 KB
testcase_16	AC	140 ms 16,776 KB
testcase_17	AC	138 ms 16,940 KB
testcase_18	AC	140 ms 16,824 KB
testcase_19	AC	139 ms 16,772 KB
testcase_20	AC	140 ms 16,832 KB
testcase_21	AC	140 ms 16,832 KB
testcase_22	AC	141 ms 16,936 KB
testcase_23	AC	142 ms 16,968 KB
testcase_24	AC	142 ms 17,020 KB
testcase_25	AC	141 ms 17,108 KB
testcase_26	AC	140 ms 16,764 KB
testcase_27	AC	140 ms 16,892 KB
testcase_28	AC	142 ms 16,816 KB
testcase_29	AC	141 ms 16,816 KB
testcase_30	AC	141 ms 16,812 KB
testcase_31	AC	139 ms 17,076 KB
testcase_32	AC	142 ms 16,888 KB
testcase_33	AC	142 ms 16,872 KB
testcase_34	AC	149 ms 17,116 KB
testcase_35	AC	145 ms 16,896 KB
testcase_36	AC	148 ms 16,972 KB
testcase_37	AC	147 ms 16,960 KB
testcase_38	AC	141 ms 16,988 KB
testcase_39	AC	142 ms 16,876 KB
testcase_40	AC	142 ms 16,992 KB
testcase_41	AC	142 ms 16,912 KB
testcase_42	AC	149 ms 17,324 KB
testcase_43	AC	144 ms 16,996 KB
testcase_44	AC	141 ms 16,764 KB
testcase_45	AC	142 ms 16,804 KB
testcase_46	AC	143 ms 16,980 KB
testcase_47	AC	142 ms 16,900 KB
testcase_48	AC	144 ms 17,036 KB
testcase_49	AC	143 ms 16,984 KB
testcase_50	AC	145 ms 16,940 KB
testcase_51	AC	147 ms 17,160 KB
testcase_52	AC	150 ms 17,016 KB
testcase_53	AC	172 ms 17,168 KB
testcase_54	AC	161 ms 17,008 KB
testcase_55	AC	173 ms 17,384 KB
testcase_56	AC	159 ms 16,976 KB
testcase_57	AC	174 ms 17,208 KB
testcase_58	AC	168 ms 17,152 KB
testcase_59	AC	181 ms 17,396 KB
testcase_60	AC	163 ms 17,120 KB
testcase_61	AC	184 ms 17,404 KB
testcase_62	AC	181 ms 17,500 KB
testcase_63	AC	144 ms 16,868 KB
testcase_64	AC	178 ms 17,260 KB
testcase_65	AC	156 ms 16,932 KB
testcase_66	AC	164 ms 16,992 KB
testcase_67	AC	170 ms 17,116 KB
testcase_68	AC	178 ms 17,328 KB
testcase_69	AC	178 ms 17,584 KB
testcase_70	AC	187 ms 17,548 KB
testcase_71	AC	181 ms 17,460 KB
testcase_72	AC	176 ms 17,296 KB
testcase_73	AC	190 ms 17,744 KB
testcase_74	AC	191 ms 17,544 KB
testcase_75	AC	193 ms 17,628 KB
testcase_76	AC	192 ms 17,560 KB
testcase_77	AC	191 ms 17,668 KB
testcase_78	AC	191 ms 17,556 KB
testcase_79	AC	189 ms 17,620 KB
testcase_80	AC	191 ms 17,556 KB
testcase_81	AC	191 ms 17,620 KB
testcase_82	WA	-

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ソースコード

raw source code

// includes
#include <bits/stdc++.h>

// macros
#define pb emplace_back
#define mk make_pair
#define pq priority_queue
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)
#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)
#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)
#define vrep(v, i) for(int i = 0; i < (v).size(); i++)
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())
#define FI first
#define SE second
#define bit(n) (1LL<<(n))
#define INT(n) int n; cin >> n;
#define LL(n) ll n; cin >> n;
#define DOUBLE(n) double n; cin >> n;
using namespace std;

template <class T>bool chmax(T &a, const T &b){if(a < b){a = b; return 1;} return 0;}
template <class T>bool chmin(T &a, const T &b){if(a > b){a = b; return 1;} return 0;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}
template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << p.first << " " << p.second; return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << itr->first << ":" << itr->second; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}

//  types
using ll = long long int;
using P = pair<int, int>;
using Pli = pair<ll, int>;
using Pil = pair<int, ll>;
using Pll = pair<ll, ll>;
using Pdd = pair<double, double>;
using cd = complex<double>;

// constants
const int inf = 1e9;
const ll linf = 1LL << 50;
const double EPS = 1e-10;
const int mod = 1e9 + 7;
const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, -1, 0, 1};

// solve

template <typename T>
T power(T a, T n, T mod) {
  n = n % (mod - 1);
  T res = 1;
  T tmp = n;
  T curr = a;
  while(tmp){
    if(tmp % 2 == 1){
      res = (T)(res * curr % mod);
    }
    curr = (T)(curr * curr % mod);
    tmp >>= 1;
  }

  return res;
}


template<typename T>
T extgcd(T a, T b, T &x, T &y){ 
  T d = a;
  if(b != 0){
    d = extgcd(b, a % b, y, x);
    y -= (a / b) * x;
  }else{
    x = 1, y = 0;
  }
  return d;
}

template <typename T>
T modinv(T a, T m){
  long long x = 0, y = 0;
  extgcd<long long>(a, m, x, y);
  x %= m;
  if(x < 0)x += m;
  return x;
}
template <int MOD, int g>
struct NTT{
  int get_mod(){
    return MOD;
  }
  void _ntt(vector<long long> &f, bool inv=false){
    int n = f.size(), mask = n - 1;
    int h = power<long long>(g, (MOD - 1) / n, MOD);
    if(inv)h = modinv(h, MOD);
    vector<long long> tmp(n);
    for(int i = n >> 1; i >= 1; i >>= 1){
      long long zeta = power<long long>(h, i, MOD);
      long long w = 1;
      for(int j = 0; j < n; j += i){
        for(int k = 0; k < i; k++){
          tmp[j+k] = (f[((j<<1)&mask)+k] + w * f[(((j<<1)+i)&mask)+k] % MOD) % MOD;
        }
        w = w * zeta % MOD;
      }
      swap(f, tmp);
    }
  }
  void ntt(vector<long long> &f){
    _ntt(f, false);
  }
  void intt(vector<long long> &f){
    _ntt(f, true);
    int n = f.size();
    int ni = modinv(n, MOD);
    for(int i = 0; i < n; i++)f[i] = f[i] * ni % MOD;
  }
  vector<long long> convolution(vector<long long> f, vector<long long> h){
    int n = 1;
    while(n < int(f.size() + h.size()))n *= 2;
    f.resize(n, 0); h.resize(n, 0);
    ntt(f);
    ntt(h);
    for(int i = 0; i < n; i++)f[i] = f[i] * h[i] % MOD;
    intt(f);
    return f;
  }
};

using NTT1 = NTT<167772161, 3>;
using NTT2 = NTT<469762049, 3>;
using NTT3 = NTT<1224736769, 3>;

template <typename T>
long long garner(vector<T> b, vector<T> m, T MOD){
  m.emplace_back(MOD);
  vector<long long> coef(m.size(), 1);
  vector<long long> consts(m.size(), 0);
  for(int i = 0; i < b.size(); i++){
    long long t = ((b[i] - consts[i]) % m[i]) * modinv<long long>(coef[i], m[i]) % m[i];
    for(int j = i + 1; j < m.size(); j++){
      consts[j] = (consts[j] + t * coef[j] % m[j]) % m[j];
      coef[j] = coef[j] * m[i] % m[j];
    }
  }
  return consts.back();
}


vector<long long> arbitrary_mod_convolution(vector<long long> f, vector<long long> g, int MOD){
  for(size_t i = 0; i < f.size(); i++)f[i] %= MOD;
  for(size_t i = 0; i < g.size(); i++)g[i] %= MOD;
  NTT1 ntt1;
  NTT2 ntt2;
  NTT3 ntt3;
  auto x1 = ntt1.convolution(f, g);
  auto x2 = ntt2.convolution(f, g);
  auto x3 = ntt3.convolution(f, g);

  vector<long long> res(x1.size());
  vector<long long> b(3), m(3);
  m[0] = ntt1.get_mod();
  m[1] = ntt2.get_mod();
  m[2] = ntt3.get_mod();
  for(size_t i = 0; i < x1.size(); i++){
    b[0] = x1[i];
    b[1] = x2[i];
    b[2] = x3[i];
    res[i] = garner<long long>(b, m, MOD);
  }
  return res;
}


int main(int argc, char const* argv[])
{
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(20);
  INT(n); vector<ll> a(n); cin >> a;
  ll res = 1;
  ll sum = a[n-1];
  rrep(i, n - 1){
    res = res * power<ll>(a[i], sum, mod) % mod;
    sum += a[i];
  }

  vector<ll> b(2e5+1, 0);
  rep(i, n)b[a[i]]++;
  NTT1 ntt1;
  auto f = ntt1.convolution(b, b);
  rep(i, n)f[a[i] * 2]--;
  rep(i, sz(f))f[i] /= 2;
  /*rep(i, 10)cout << b[i] << "\n "[i + 1 != 10];
  rep(i, 10)cout << b[i] << "\n "[i + 1 != 10];
  rep(i, 10)cout << f[i] << "\n "[i + 1 != 10];*/
  FOR(i, 1, sz(f)){
    res = res * power<ll>(i, f[i], mod) % mod;
  }

  ll am = a[n-1];
  double mini = 1e18;
  ll prod = 1;
  rrep(i, n - 1){
    double tmp = log(a[i] + am) + am * log(a[i]);
    if(tmp < mini){
      mini = tmp;
      prod = (am + a[i]) * power<ll>(a[i], am, mod) % mod;
    }
    am = min(am, a[i]);
  }
  res = res * modinv<ll>(prod, mod) % mod;

  cout << res << endl;
  return 0;
}

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結果

テストケース

ソースコード