Submission

Score: 100

User: Zailagend1

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.019 second

Submitted On: 2026-06-23 23:37:00

#include <bits/stdc++.h>
using namespace std;
const int MAX = 7000005;
vector<bool> isprime(MAX,true);
void sieve(){
  isprime[0] = false;
  isprime[1] = false;
  for(int i = 2;i * i < MAX;i++){
    if(isprime[i]){
      for(int r = i*i;r< MAX;r+=i){
        isprime[r] = false;   
      }
    }
    
  }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    sieve();
    int n;
    cin >> n;
    for(int i = 0;i<n;i++){
      if(isprime[i]){
        cout << i << endl;
      }
    }
    
    return 0;
}