#include "bits/stdc++.h"
using namespace std;

#define DEBUG(x) cout << #x << ": " << x << endl;
#define DEBUG_VEC(v)                                      \
  cout << #v << ":";                                      \
  for (int i = 0; i < v.size(); i++) cout << " " << v[i]; \
  cout << endl

typedef long long ll;
#define vi vector<int>
#define vl vector<ll>
#define vii vector<vector<int> >
#define vll vector<vector<ll> >
#define vs vector<string>
#define pii pair<int, int>
#define pis pair<int, string>
#define psi pair<string, int>
const int inf = 1000000001;
const ll INF = 1e16;
#define MOD 1000000007
#define mod 1000000009
#define pi 3.14159265358979323846
#define Sp(p) cout << setprecision(15) << fixed << p << endl;
int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};

int main() {
  double m;
  int n, i;
  cin >> m >> n;
  for (i = 0; i < n; i++) {
    m = (3 * m + 1) / 3;
  }
  Sp(m);
}