> #include<iostream.h>
> #include<iomanip.h>
> #include<math.h>
> double R;
> int n,i,wide1,wide2;
> void computation(double,int);
> void main()
> {
> 	cin>>R>>n;
> 	computation(R,n);
> }
> void computation(double a,int b)
> {
> 	double x=pow(a*10000,n);
> 	for(i=0;;i++)
> 	{
> 		if(!floor(x/pow(10,i)))
> 			break;
> 	}
> 	wide1=i;
> 	for(i=1;;i++)
> 	{
> 		if(int(a*10000)%int(pow(10,i)))
> 			break;
> 	}
> 	wide2=(5-i)*n;
> 	cout<<".";
> 	for(i=0;i<4*n-wide1;i++)
> 		cout<<"0";
> 	for(i=0;i<wide2-4*n+wide1;i++)
> 	{
> 		cout<<int(x/pow(10,wide1-i-1));
> 		x-=int(x/pow(10,wide1-i-1))*pow(10,wide1-i-1);
> 	}
> 	cout<<endl;
> }