#include <cstdio> #include <iostream> #include <iomanip> using namespace std; int main() { // 下落的高度和落地的次数 double h; int n; double h1 = h; cin >> h; cin >> n; // write your code here...... for (int i=1; i<n; i++) { h /= 2; h1 += 2 * h; } printf("%.1f", h1); cout << " "; printf("%.1f", h/2); return 0; return 0; }