Submission

Score: 100

User: 0809306012a

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.002 second

Submitted On: 2026-07-01 10:47:36

#include<bits/stdc++.h> 
using namespace std;

void primenumber(int n){
    vector<bool> prime(n+1,true);
    prime[0]=false;
    prime[1]=false;
    for(int i=2;i*i<=n;i++){
        if(prime[i]){
            for(int j=i*i;j<=n;j+=i){
                prime[j]=false;
            }
        }
    }
    for(int i=2;i<n;i++){
        if(prime[i]){
            cout<<i<<"\n";
        }
    }
}

int main(){
    int n;
    cin>>n;
    primenumber(n);
    return 0;
}