#361021 (C++14) No.371 ぼく悪いプライムじゃないよ

提出ソース

結果

問題	No.371 ぼく悪いプライムじゃないよ
ユーザー	fumiphys
提出日時	2019-07-21 15:52:51
言語	C++14 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	3 ms / 1,000 ms
コード長	4,589 bytes
コンパイル時間	1,541 ms
コンパイル使用メモリ	171,700 KB
実行使用メモリ	6,944 KB
最終ジャッジ日時	2024-06-13 03:07:15
合計ジャッジ時間	2,803 ms
ジャッジサーバーID （参考情報）	judge4 / judge5

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	3 ms 6,812 KB
testcase_01	AC	3 ms 6,812 KB
testcase_02	AC	2 ms 6,816 KB
testcase_03	AC	3 ms 6,816 KB
testcase_04	AC	3 ms 6,940 KB
testcase_05	AC	3 ms 6,940 KB
testcase_06	AC	3 ms 6,944 KB
testcase_07	AC	2 ms 6,940 KB
testcase_08	AC	3 ms 6,940 KB
testcase_09	AC	2 ms 6,944 KB
testcase_10	AC	3 ms 6,940 KB
testcase_11	AC	3 ms 6,940 KB
testcase_12	AC	3 ms 6,944 KB
testcase_13	AC	3 ms 6,944 KB
testcase_14	AC	2 ms 6,940 KB
testcase_15	AC	3 ms 6,940 KB
testcase_16	AC	3 ms 6,940 KB
testcase_17	AC	3 ms 6,940 KB
testcase_18	AC	3 ms 6,940 KB
testcase_19	AC	3 ms 6,944 KB
testcase_20	AC	3 ms 6,940 KB
testcase_21	AC	2 ms 6,940 KB
testcase_22	AC	3 ms 6,940 KB
testcase_23	AC	3 ms 6,944 KB
testcase_24	AC	3 ms 6,940 KB
testcase_25	AC	3 ms 6,944 KB
testcase_26	AC	3 ms 6,940 KB
testcase_27	AC	3 ms 6,940 KB
testcase_28	AC	3 ms 6,940 KB
testcase_29	AC	2 ms 6,944 KB
testcase_30	AC	3 ms 6,940 KB
testcase_31	AC	3 ms 6,944 KB
testcase_32	AC	3 ms 6,940 KB
testcase_33	AC	2 ms 6,940 KB
testcase_34	AC	3 ms 6,940 KB
testcase_35	AC	2 ms 6,940 KB
testcase_36	AC	3 ms 6,940 KB
testcase_37	AC	3 ms 6,944 KB
testcase_38	AC	3 ms 6,940 KB
testcase_39	AC	3 ms 6,940 KB
testcase_40	AC	2 ms 6,944 KB
testcase_41	AC	2 ms 6,940 KB
testcase_42	AC	3 ms 6,940 KB
testcase_43	AC	2 ms 6,940 KB
testcase_44	AC	3 ms 6,940 KB
testcase_45	AC	3 ms 6,940 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

raw source code

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

// macros
#define ll long long int
#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 dump(a, n) for(int i = 0; i < n; i++)cout << a[i] << "\n "[i + 1 != n];
#define dump2(a, n, m) for(int i = 0; i < n; i++)for(int j = 0; j < m; j++)cout << a[i][j] << "\n "[j + 1 != m];
#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
typedef pair<int, int> P;
typedef pair<ll, int> Pl;
typedef pair<ll, ll> Pll;
typedef pair<double, double> Pd;
typedef complex<double> cd;

// 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>
vector<T> list_prime(T n){
  vector<T> res;
  vector<bool> i_prime = vector<bool>(n+1, true);
  for(ll i = 2; i <= n; i++){
    if(i_prime[i]){
      res.push_back(i);
      for(ll j = 2; j * i <= n; j++){
        i_prime[i * j] = false;
      }
    }
  }
  return res;
}

template <typename T>
bool is_prime(T x){
  if(x == 1)return false;
  for(ll i = 2; i * i <= x; i++){
    if(x % i == 0)return false;
  }
  return true;
}

template <typename T>
map<T, int> factorize(T n){
  map<T, int> res;
  T tmp = n;
  for(T i = 2; i * i <= n; i++){
    while(tmp % i == 0){
      ++res[i];
      tmp /= i;
    }
  }
  if(tmp != 1)res[tmp] = 1;
  return res;
}


ll fi(ll n){
  if(n % 2 == 0)return 2;
  for(ll i = 3; i * i <= n; i += 2){
    if(n % i == 0)return i;
  }
  return n;
}

int main(int argc, char const* argv[])
{
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(20);
  LL(l); LL(h);
  vector<ll> p = list_prime<ll>(1e5);
  ll res = 0;
  for(int i = sz(p) - 1; i >= 0; i--){
    for(ll j = h / p[i]; j * p[i] >= max(l, res) && j >= p[i]; j--){
      if(j == 1)continue;
      if(fi(j) >= p[i]){
        res = max(res, j * p[i]);
        break;
      }
    }
    if(res > 0){
      cout << res << endl;
      return 0;
    }
  }
  cout << res << endl;
  return 0;
}

yukicoder

結果

テストケース

ソースコード