package bai3;
import java.util.*;
class Nhap {
public static int nhapSo()
{
Scanner so= new Scanner(System.in);
int a= so.nextInt();
return a;
}
public static boolean kt(int x)
{
boolean t=true;
if(x<2) t=false;
else
for(int i=2;i<=Math.sqrt(x);i++)
{
if (x%i==0)
{
t=false;
break;
}
}
return t;
}
public static void main (String[] args) {
System.out.println("Moi ban nhap vao 1so:");
Nhap x=new Nhap();
int n=x.nhapSo();
System.out.println("Cac so nguyen to nho hon n la: ");
for(int j=2;j if(x.kt(j)) System.out.println(" "+j);
}
}