#include <stdio.h>
#include <string.h>
int main()
{
	char r[8],w[8];
	int  a[8],b[155],s[155];
	int  c,f,i,j,k,l,m,n;
	while (scanf("%s%d",r,&n)!=EOF)
	{
        if (n==0){printf("1\n");continue;}
		j=m=f=0;
		for (i=0;i<155;++i)
			b[i]=s[i]=0;
		for (i=l=strlen(r)-1;i>=0;--i)
		{			
			if (r[l-i]!='.') 
			{
				w[j++]=r[l-i];
				m++;
			}
			else {m=0;f=1;}
		}
		if (f)  while (!(w[j-1]-'0')) {--j;--m;}
		for (i=l=j-1;i>=0;--i)
			a[i]=b[i]=w[l-i]-'0';
		l=j;
		for (i=1;i<n;++i)
		{
			for (j=0;j<l;++j)
				for (k=0;k<(6*n+5);++k)
					s[j+k]+=a[j]*b[k];
			for (k=0,c=0;k<(6*n+5);++k)
			{
				b[k]=(s[k]+c)%10;
				c=(s[k]+c)/10;
				s[k]=0;
			}
		}
		j=144;
		while (!b[j])
			--j;
		l=j-m*n;
		if (f)
		{
			k=j;
			if ((l+1)<0)
			{
				printf(".");
				for (;l+1<0;l++)
					printf("0");
			}
			else
			{
				for (k=j;k>=j-l;k--)
					printf("%d",b[k]);
				if (k>=0) printf(".");
			}			
			for (;k>=0;--k)
				printf("%d",b[k]);
		} 
		else
		{
			for (;j>=0;--j)
				printf("%d",b[j]);
		}		
		printf("\n");
	}
	return 0;
}