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);}