
int main()
{
	int m;
	cin>>m;
	int e;
	int b=0;
	int c=0;
	for(int k=3;k<=m/2;k=k+2)
	{
		e=0;
	    for(int i=2;i<=sqrt(k);i=i+1)//??k?????
        {
		    b=k%i;
		    if(b==0)
			    e=1;
        }
	    if(e==0)//??k???
	    {
	    	c=m-k;
	    	for(int i=2;i<=sqrt(c);i=i+1)//??k?????
	            {
	    			b=c%i;
	    			if(b==0)
	    				e=1;
	    		}
	    		if(e==0)//??k???
	    			cout<<k<<" "<<c<<endl;
	    }
	}
	return 0;
}