Submission

Score: 80

User: mmpk

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.003 second

Submitted On: 2026-06-24 12:23:07

#include<bits/stdc++.h>
using namespace std;
int a[109];
int main(){
    int n;cin>>n;
    a[0]=a[1]=1;
    a[2]=0;
    for(int i=2;i<=n;i++){
        if(a[i]==0){
            for(int j=i*i;j<=n;j+=i){
                a[j]=1;
            }
        }
    }

    for(int i=2;i<=n;i++){
        if(a[i]==0){
            cout<<i<<'\n';
        }
    }

}