#include<iostream>
#include<cstdio>
using namespace std;
int n,k;
int main()
{
    cin>>n>>k;
    int i=1;
	double sum=0.0,s=0.0,j=0.0;
    while(i<=n)
    {
        if(i%k==0) 
        {   
            j++;
            sum=sum+i;
        }
        else s=s+i;
        i++;
    }
   
    double o,p;
    o=sum/j;
    
    p=s/double(100-j);
    
    
    printf("%.1f %.1f",o,p);
}