using System;
 
public class Test
{
    public static int Fact( int n )
    {
        if( n == 0 ) return 1;
        return n*Fact( n-1);
    }
 
    public static double Term( double x, int n )
    {
        return Math.Pow( x, n )/ Fact(n); 
    }
 
	public static void Main()
	{
        const double eps = 0.00001;
        double exp = 0;
        int i = 0;
        double term;
        do
        {
            term = Term( 1, i++ );
            exp += term;
        } 
        while( term > eps );
 
        Console.WriteLine( exp );
        Console.WriteLine( Math.Exp(1) );
 
	}
}

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