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);

}