#include <iomanip> #include <iostream> using namespace std; int main() { double M, N; cin >> M >> N; double s = M; double sum = M; for (int i = 1; i <= N; i++) { s=s/ 2; if (i != N) { sum += s*2 ; } } cout << fixed << setprecision(2) << s << " " << sum+s<< endl; return 0; }