package text;

   import java.util.Scanner;  

public class test {

public static void main(String[] args) {  
         Scanner in = new Scanner(System.in);  
         int x;  
         x = in.nextInt();  
         boolean isprime = true;  
           
         for (int i = 2; i <= x; i++) {  
             for(int j = 2; j < i; j++) {  
                   if(i % j == 0)            {  
                     isprime = false;  
                     break;  
                   }  
             }  
             if(isprime)      System.out.print(i + " ");  
             isprime = true;  //这里为什么一定要重新赋值true？不赋值为什么没有运行结果？
         }  
        }
    }