#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
using namespace std;
typedef long long ll;
const int mod=1e9+7;
int main(){
	int n;
	double p;
	cin>>n>>p;
	cout<<fixed<<setprecision(20)<<(n>=200?1.:1-pow(1-p,n))<<endl;
}