include<bits/stdc++.h> using namespace std; float passed,height,turn; int ball(float height,float turn) {

if(turn==10)
{
	cout<<fixed<<setprecision(3)<<passed<<endl<<height/2;
	return 0;
}if(turn==9)
{passed+=height+height;}else
{passed+=height+height/2;}
ball(height/2,turn+1);

} int main() {cin>>height;ball(height,1);}