#include <iostream>
#include <cstdio>

using namespace std;

int main(){
	double a;
	int res[128];
	int length;
	
	while(cin>>a){
		length = 0;
		int n = a/100;
		while(n != 0){
			res[length++] = n;
			a = (a-n*100)*10;
			n = a/100;
		}
		for(int i = length-1; i >= 0; i--){
			if(i == 2){
				cout<<'.'; 
			}
			cout<<res[i];
		}
		cout<<endl;
	}
	
	return 0;
}