int main(){
    int n,k,sum1=0,sum2=0,cnt1=0,cnt2=0,c=1;
    scanf("%d %d",&n,&k);
    for(;c<=n;c++)
    {
        if(c=k||(c>k&&c%k==0))
        {
            sum1+=c;
            cnt1++;
        }else   {
            sum2+=c;
            cnt2++;
                }
    }
    double a,b;
    a=sum1/cnt1;
    b=sum2/cnt2;
    printf("%.1d %.1d",a,b);
    return 0;
    
}