using System;

public class Test
{
	public static void Main()
	{
		decimal dec = -12345678912345678912345678912.456m;
		int digits = GetDigits(dec);
		Console.WriteLine(digits.ToString());
	}
	
	static int GetDigits(decimal dec)
	{
		decimal d = decimal.Floor(dec < 0 ? decimal.Negate(dec) : dec);
		int cnt = 1;
		while ((d = decimal.Floor(d / 10m)) != 0m)
		    cnt++;
		return cnt;
	}
}