#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n;
    if(scanf("%d", &n) != 1) return 0; 
    
    while(1)
    {
        printf("%d\n%d", n*2, n/2); 
        
       
        if(scanf("%d", &n) != 1) 
            break; 
        
  
        printf("\n\n");
    }

    return 0;
}