using System; using System.Collections.Generic; using System.Text; using System.Linq; class Program { public void Proc() { Reader.IsDebug = false; string[] inpt = Reader.ReadLine().Split(' '); decimal sokudo = decimal.Parse(inpt[0]); int sec = int.Parse(inpt[1]); decimal ans = sokudo * sec; Console.WriteLine((long)ans); } public class Reader { public static bool IsDebug = true; private static String PlainInput = @" 0.0123 45 "; private static System.IO.StringReader Sr = null; public static string ReadLine() { if (IsDebug) { if (Sr == null) { Sr = new System.IO.StringReader(PlainInput.Trim()); } return Sr.ReadLine(); } else { return Console.ReadLine(); } } } static void Main() { Program prg = new Program(); prg.Proc(); } }