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

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• Last update: 2024-04-24 02:34:04+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	6 ms	4 MB
g++	2_00	AC	6 ms	4 MB
g++	499477801_00	AC	3778 ms	167 MB
g++	499999993_00	AC	3805 ms	167 MB
g++	example_00	AC	7 ms	4 MB
g++	max_00	AC	3849 ms	167 MB
g++	max_01	AC	3903 ms	167 MB
g++	ten_00	AC	673 ms	38 MB
g++	ten_01	AC	111 ms	14 MB
g++	ten_02	AC	17 ms	4 MB
clang++	1_00	AC	6 ms	4 MB
clang++	2_00	AC	6 ms	4 MB
clang++	499477801_00	AC	3391 ms	167 MB
clang++	499999993_00	AC	3376 ms	167 MB
clang++	example_00	AC	7 ms	4 MB
clang++	max_00	AC	3407 ms	167 MB
clang++	max_01	AC	3435 ms	167 MB
clang++	ten_00	AC	590 ms	38 MB
clang++	ten_01	AC	103 ms	13 MB
clang++	ten_02	AC	17 ms	4 MB

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