#include <iostream>
#include <vector>
#include <cstring>
#include <algorithm>

using namespace std;

string ans(string src, string another) 
{
    reverse(src.begin(), src.end());
    reverse(another.begin(), another.end());

    int n = src.length() + another.length();

    vector<int> temp;
    temp.resize(n);
    for (int i = 0; i < temp.size(); i ++) temp.at(i) = 0;

    for (int i = 0; i < src.length(); i ++) 
    {
        for (int j = 0; j < another.length(); j++) 
        {
            int tem = (src.at(i) - '0') * (another.at(j) - '0');
            temp.at(i + j) += tem;
            if (temp.at(i + j) > 9 && (i + j) < n - 1) 
            {
                temp.at(i + j + 1) += temp.at(i + j) / 10;
                temp.at(i + j) = temp.at(i + j) % 10;
            }
            else if (temp.at(i + j) > 9 && (i + j) == n - 1) 
            {
                temp.push_back(temp.at(i + j) / 10);
                temp.at(i + j) = temp.at(i + j) % 10;
            }
            temp.at(0) = temp.at(0);
        }
    }
    string returnString;
    returnString.resize(n);
    for (int i = 0; i < n; i ++) returnString[i] = temp[i] + '0';
    reverse(returnString.begin(), returnString.end());
    int noZeroPos = returnString.find_first_not_of('0');

    if (noZeroPos != string::npos) returnString.erase(0, noZeroPos);
    else returnString = "0";
    return returnString;
}

void outPut(string a, int n) {
    string answerString;

    int dotPos = -1;
    int zeroNumble = 0;
    int integerNumble;
    int decimalNumble;

    dotPos = a.find_first_of('.');
    if (dotPos != string::npos) {
        a.erase(dotPos, 1);
    }

    integerNumble = dotPos;
    decimalNumble = a.size() - integerNumble;
    zeroNumble = a.find_first_not_of('0');

    answerString.push_back('1');
    for (int i = 0; i < n; i ++) {
        answerString = ans(answerString, a);
    }

    int ansSize = answerString.size();
    int temp = decimalNumble * n;
    temp = temp;

    if (ansSize > decimalNumble * n) {
        int t = answerString.size() - n * decimalNumble;
        answerString.insert(ansSize - decimalNumble * n, 1, '.');

        int lastZeroPos = answerString.find_last_not_of('0');
        if (lastZeroPos < answerString.size() - 1) {
            answerString.erase(lastZeroPos + 1, answerString.size() - 1 - lastZeroPos);
        }

        if (lastZeroPos == t) answerString.erase(lastZeroPos, 1);
        cout << answerString;
    }
    else 
    {
        cout << '.';
        for (int i = 0; i < decimalNumble * n - ansSize; i ++) cout << '0';
        int lastZeroPos = answerString.find_last_not_of('0');
        if (lastZeroPos < answerString.size() - 1) answerString.erase(lastZeroPos + 1, answerString.size() - 1 - lastZeroPos);
        int t = answerString.size() - n * decimalNumble - 1;
        if (lastZeroPos == t) answerString.erase(lastZeroPos, 1);
        cout << answerString;
    }
    cout << endl;
}

int main() 
{
    string a;
    string in;
    int n;
    while (getline(cin, in)) 
    {
        if (in.size() == 0) continue;
        string a = in.substr(0, 6);
        int n = atoi(in.substr(7, 2).c_str());
        outPut(a, n);
    }
    return 0;
}