test/verify/yosupo-enumerate-primes.test.cpp

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• Last update: 2024-05-01 23:44:47+09:00
• Problem: https://judge.yosupo.jp/problem/enumerate_primes

Depends on

• Enumerate Primes(素数列挙) (math/number-theory/enumerate-primes.hpp)
• Prime Table(素数テーブル) (math/number-theory/prime-table.hpp)
• template/template.hpp

Code

// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/enumerate_primes

#include "../../template/template.hpp"

#include "../../math/number-theory/enumerate-primes.hpp"

int main() {
  int N, A, B;
  cin >> N >> A >> B;
  auto d = enumerate_primes(N);
  vector< int > ans;
  for(int i = B; i < d.size(); i += A) {
    ans.emplace_back(d[i]);
  }
  cout << d.size() << " " << ans.size() << "\n";
  cout << ans << "\n";
}

#line 1 "test/verify/yosupo-enumerate-primes.test.cpp"
// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/enumerate_primes

#line 1 "template/template.hpp"
#include <bits/stdc++.h>

using namespace std;

using int64 = long long;

const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;

struct IoSetup {
  IoSetup() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
    cerr << fixed << setprecision(10);
  }
} iosetup;

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>
istream &operator>>(istream &is, pair<T1, T2> &p) {
  is >> p.first >> p.second;
  return is;
}

template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
  for (int i = 0; i < (int)v.size(); i++) {
    os << v[i] << (i + 1 != v.size() ? " " : "");
  }
  return os;
}

template <typename T>
istream &operator>>(istream &is, vector<T> &v) {
  for (T &in : v) is >> in;
  return is;
}

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);
}

template <typename T = int64>
vector<T> make_v(size_t a) {
  return vector<T>(a);
}

template <typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
  return vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));
}

template <typename T, typename V>
typename enable_if<is_class<T>::value == 0>::type fill_v(T &t, const V &v) {
  t = v;
}

template <typename T, typename V>
typename enable_if<is_class<T>::value != 0>::type fill_v(T &t, const V &v) {
  for (auto &e : t) fill_v(e, v);
}

template <typename F>
struct FixPoint : F {
  explicit FixPoint(F &&f) : F(forward<F>(f)) {}

  template <typename... Args>
  decltype(auto) operator()(Args &&...args) const {
    return F::operator()(*this, forward<Args>(args)...);
  }
};

template <typename F>
inline decltype(auto) MFP(F &&f) {
  return FixPoint<F>{forward<F>(f)};
}
#line 4 "test/verify/yosupo-enumerate-primes.test.cpp"

#line 1 "math/number-theory/prime-table.hpp"
/**
 * @brief Prime Table(素数テーブル)
 *
 */
vector<bool> prime_table(int n) {
  vector<bool> prime(n + 1, true);
  if (n >= 0) prime[0] = false;
  if (n >= 1) prime[1] = false;
  for (int i = 2; i * i <= n; i++) {
    if (!prime[i]) continue;
    for (int j = i * i; j <= n; j += i) {
      prime[j] = false;
    }
  }
  return prime;
}
#line 2 "math/number-theory/enumerate-primes.hpp"

vector<int> enumerate_primes(int n) {
  if (n <= 1) return {};
  auto d = prime_table(n);
  vector<int> primes;
  primes.reserve(count(begin(d), end(d), true));
  for (int i = 0; i < d.size(); i++) {
    if (d[i]) primes.push_back(i);
  }
  return primes;
}
#line 6 "test/verify/yosupo-enumerate-primes.test.cpp"

int main() {
  int N, A, B;
  cin >> N >> A >> B;
  auto d = enumerate_primes(N);
  vector< int > ans;
  for(int i = B; i < d.size(); i += A) {
    ans.emplace_back(d[i]);
  }
  cout << d.size() << " " << ans.size() << "\n";
  cout << ans << "\n";
}

Test cases

Env	Name	Status	Elapsed	Memory
g++	1_00	AC	8 ms	4 MB
g++	2_00	AC	8 ms	4 MB
g++	499477801_00	AC	4339 ms	167 MB
g++	499999993_00	AC	4315 ms	167 MB
g++	example_00	AC	8 ms	4 MB
g++	max_00	AC	4424 ms	167 MB
g++	max_01	AC	4420 ms	167 MB
g++	ten_00	AC	687 ms	38 MB
g++	ten_01	AC	107 ms	14 MB
g++	ten_02	AC	19 ms	4 MB
clang++	1_00	AC	8 ms	4 MB
clang++	2_00	AC	8 ms	4 MB
clang++	499477801_00	AC	3921 ms	167 MB
clang++	499999993_00	AC	3929 ms	167 MB
clang++	example_00	AC	8 ms	4 MB
clang++	max_00	AC	3975 ms	167 MB
clang++	max_01	AC	3990 ms	167 MB
clang++	ten_00	AC	622 ms	38 MB
clang++	ten_01	AC	98 ms	14 MB
clang++	ten_02	AC	19 ms	4 MB

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