//Normal

#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void print(auto a){
  cout << a;
}

void prints(auto a){
  cout << a << " ";
}

void prints(){
  cout << " ";
}

void printl(auto a){
  cout << a << endl;
}

void printl(){
  cout << endl;
}

void fix(int n){
  cout << fixed << setprecision(n);
}

int siz(string s){
  return (int)s.size();
}

int main(){
  int N; cin >> N;
  if(200 <= N){
    printl(1);
  }else{
    double P; cin >> P;

    double ans = 1.0;
    for(int i = 0; i < N; i++){
      ans *= (1 - P);
    }

    fix(10);
    printl(1 - ans);
  }

  return 0;
}