Submission

Score: 80

User: s0m30n3

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-26 21:18:32

#include <iostream>
using namespace std;

int main(){
    int n;
    cin >> n;
    int arr[n+20] = {0};
    for (int i=2;i<=n;i++){
        if (arr[i] == 1) continue;
        int to_check=1;
        cout << i << '\n';
        for (int j=i*2;j<=n;j+=i){
            arr[j] = 1;
        }
      
    }
}