#include<iostream>
#include<math.h>
#include<iomanip>

using namespace std;

void main ()
{

	float f = 12.1273345;
	int i;

	cin >> f;

	i = (f + .005) * 1000; // 12132
	i = i /10; //1213

	f = i / 100.0;


	cout << f;

	//int month = 0;
	//int monthsToDisplay = 0;
	//float balance = 0;
	//float contribution = 0;
	//float interestRate = 0;
	//float earningsThisMonth = 0;
	//float totalEarnings = 0;


	//cout << "Initial Balance? ";
	//cin >> balance;

	//cout << "Monthly contribution? ";
	//cin >> contribution;

	//cout << "Interest Rate? ";
	//cin >> interestRate;

	//char c;
	//cout << "(M)onths or (Y)ears?";
	//cin >> c;

	//if( c == 'M')
	//{
	//	cout << "Months to Display? ";
	//	cin >> monthsToDisplay;
	//}
	//else
	//{
	//	cout << "Years to Display? ";
	//	cin >> monthsToDisplay;
	//	monthsToDisplay *= 12;
	//}

	//cout.precision(2);
	//cout.setf(ios_base::fixed);
	//
	//while( month < monthsToDisplay)
	//{
	//	earningsThisMonth = balance * (interestRate / 1200);
	//	totalEarnings += earningsThisMonth;
	//	balance += earningsThisMonth;
	//	month++;

	//	cout << setw(5) << month;
	//	cout << setw(10) << earningsThisMonth;
	//	cout << setw(15) << balance << endl;

	//	balance += contribution;
	//}

	//cout << "Total earnings = " << totalEarnings << endl;
	//cout << "Total contributions = " << balance - totalEarnings << endl;


}