#include <iostream>

 using namespace std;

 #define max 1000

 char a[max];

 char b[max];

 char c[max];

 int main()

 {

     memset(a,,*sizeof(char));

     memset(b,,*sizeof(char));

     memset(c,,*sizeof(char));

     char *R=(char *)malloc(*sizeof(char));

     int n,point;

     while(cin>>R>>n)

     {

     for(int i=,j=;i>=;i--,j++)

     {

         if(R[i]=='.')

         {

             point=-i;

             j--;

             continue;

         }

         a[j]=R[i];

         b[j]=R[i];

     }

     if(n==)

     {

         strcpy(c,a);

     }

     else

     {

         for(int k=;k<n;k++)

         {

             int alen=strlen(a);

             int blen=strlen(b);

             int m,n;

             int jw=;

             for(m=;m<alen+blen;m++)

             {

                 int temp=;

                 for(n=((m-blen+)>?(m-blen+):);n<alen&&m-n<blen&&m-n>=;n++)

                 {

                     temp+=(a[n]-'')*(b[m-n]-'');

                 }

                 temp+=jw;

                 jw=temp/;

                 temp%=;

                 c[m]=temp+'';

             }

             strcpy(a,c);

         }

     }

     int slen=strlen(c);

     int q;

     for(q=strlen(c)-;c[q]==''&&q>=point*n;q--)

     {

         c[q]=;

     }

     for(q=;c[q]==''&&q<point*n;q++)

     {

     }

     for(int p=strlen(c)-;p>=q;p--)

     {

         if(p==point*n-)

         {

             cout<<".";

         }

         cout<<c[p];

     }

     memset(a,,*sizeof(char));

     memset(b,,*sizeof(char));

     memset(c,,*sizeof(char));

     cout<<endl;

     }

     return ;

 }