#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<=b;++i)
#define ms(arr,a) memset(arr,a,sizeof arr)
int pos[55],neg[75];
int& a(int i)
{
if(i<0)return neg[-i];
else return pos[i];
}
int main()
{
int n;
while(~scanf("%d",&n))
{
ms(pos,0);
ms(neg,0);
a(0)=n;
bool bad=true;
int pos_max=0,neg_max=0;
while(bad)
{
bad=false;
for(int i=neg_max;i<=pos_max;i++)
{
if(a(i)>1)
{
a(i+1)=a(i+1)+a(i)/2;
a(i-2)=a(i-2)+a(i)/2;
a(i)%=2;
if(i+1>pos_max)pos_max=i+1;
if(i-2<neg_max)neg_max=i-2;
bad=true;
}
}
for(int i=neg_max;i<=pos_max;i++)
{
if(a(i)&&a(i+1))
{
int tmp=min(a(i),a(i+1));
a(i+2)+=tmp;
a(i)-=tmp,a(i+1)-=tmp;
if(i+2>pos_max)pos_max=i+2;
bad=true;
}
}
while(a(neg_max)==0&&neg_max<=0)neg_max++;
}
for(int i=pos_max;i>=0;i--)
{
printf("%d",a(i));
}
if(neg_max<0)
{
printf(".");
for(int i=-1;i>=neg_max;i--)printf("%d",a(i));
}
printf("
");
}
}