#include<iostream>
#include<bits/stdc++.h>
using namespace std;
int main(){
	float a;
	cin>>a;
	float b=(a-int(a))*10+(int(a)%10)*0.1+(int(a)/10%10)*0.01+(int(a)/100%10)*0.001;
	cout<<fixed<<setprecision(3)<<b;
}