import java.io.*;

class H4Ex1
{
public static exp(double x)
{
double us=1;
double exponent=1;
x=Double.parseDouble(cin.readLine());
for(double sayi=1;sayi<=200;sayi++)
{
faktoriyel*=sayi;
us*=x;
exponent+=us/faktoriyel;
}
}
public static void main(String args[]) throws IOException
{
BufferedReader cin=new BufferedReader(new InputStreamReader(System.in));
double faktoriyel=1;
double x;

System.out.print("Bir sayi giriniz:");

System.out.println("exp("+x+") = "+exponent);
}
}
