#include <iostream>
#include <string>

#define max 100

using namespace std;

int multiply( int *sum, int *a, int *b, int la, int lb );

int main()
{
	char sr[7];
	int a[7], sum[max], b[max];
	int n, lsum, la, lb, pos;
	int i, j, k;

	while( cin>>sr>>n )
	{
		//chage sr to a
		la = strlen(sr);
		for( i = 0, j = la-1 ; j >= 0 ; i++, j-- )
		{
			if( sr[j] == '.' )
			{
				pos = i;
				i--;
			}
			else 
			{
				a[i] = sr[j] - '0';
				sum[i] = a[i];
			}
		}//end for
		lsum = --la;


		for( i = 1; i < n; i++)
		{
			for( j = 0; j < max; j++ )
			{
				b[j] = sum[j];
				sum[j] = 0;
			}// end first for
			lb = lsum;
			lsum = multiply(sum, a, b, la, lb);
		}//end second for
		//output the result
		pos = pos * n;
		for( i = lsum-1; i >= 0; i--)
		{
			if( i == pos-1 )
			{
				cout<<".";
				i++;
				pos = max;
			}
			else cout<<sum[i];
		}
		cout<<endl;


	}//end while
	return 0;
}

//function multiply
int multiply( int *sum, int *a, int *b, int la, int lb )
{
	int lsum = 0;
	int i, j;
	
	//initialize the sum
	for( i = 0; i < max; i++)
		sum[i] = 0;

	//mul
	for( i = 0; i < la; i++ )
		for ( j = 0, lsum = i; j < lb; j++ )
			sum[lsum++] += a[i] * b[j];
	
	//advance 
	for( i = 0; i < lsum; i++ )
	{
		if( i == lsum -1 && sum[lsum -1] >= 10 )
			lsum++;
		if( sum[i] >= 10 )
		{
			sum[i+1] += sum[i] / 10;
			sum[i] = sum[i] % 10;
		}
	}

	return lsum;
}