#include <stdio.h>
#include<string.h>
#include<stdlib.h>
#define len 100
int point;
void mul(int val[],int n,int v)
{
	int i,j,t=0;
	for(i=0;i<len-1;i++)
		val[i]=0;
	val[len-1]=1;
	for(j=0;j<n;j++)
	{
		for(i=len-1;i>=0;i--)
		{
			val[i]=val[i]*v;
		}
		for(i=len-1;i>=0;i--)
		{
			val[i]+=t;
			t=val[i]/10;
			val[i]%=10;
		}
	}
}
void main()
{
	char r[6];
	double r1;
	int n,i,j,k=0,p,t,v;
	int val[len],val1[100][len],point1[100];
	while(scanf("%s%d",r,&n)==2)
	{
		for(i=0;r[i]!='\0';i++){}
		for(;i<6;i++)
			r[i]='0';
		for(i=0,v=0;i<6;i++)
		{
			if(r[i]!='.')
			{	
				t=r[i]-'0';
				v=v*10+t;
			}
			else
			{
				point=(5-i)*n;
				r1=v;
			}
		}
		r1=(double)strtod(r,NULL);
		if(r1<=0.0||r1>=99.999||n>25||n<=0)
			continue;
		mul(val,n,v);
		point1[k]=point;
		for(i=0;i<len;i++)
		{
			val1[k][i]=val[i];
		}
		k++;
		
	}
	for(p=0;p<k;p++)
	{
		for(j=len-1;val1[p][j]==0&&j>=len-point1[p];j--){}
		for(i=0;val1[p][i]==0&&i<len-point1[p];i++){}
		for(;i<len-point1[p];i++)
		{
			printf("%d",val1[p][i]);
		}
		if(j+1!=len-point1[p])
			printf(".");
		for(;i<=j;i++)
		{
			printf("%d",val1[p][i]);
		}
		printf("\n");
	}
}