
int main()
{
    int n, m, i, j;
    double k;
    
    cin >> n;
    
    for(i = 3; i <= n / 2; i = i + 2)
    {
        int r = 0;
        
        k = sqrt(i);
        
        for(j = 2; j <= k; j++)
           if(i % j == 0)
	  {
		r++; break;
	   }
                
        if(r) 
           continue;
        r = 0;
        k = sqrt(n - i);
            
        for(j = 2; j <= k; j++)
            if((n - i) % j == 0)
	   {
		r++;  break;
             }
                    
        if(r) 
            continue;
        
        cout << i << " " << (n- i) << endl;
    }
    return 0;
}

