//正しいフォーム
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Linq;
using static System.Console;

public class hello{
    public static void Main(){ //yukicoder No.56 消費税
        
        var s = ReadLine().Trim().Split(' ').Select(long.Parse).ToArray();
        var d = s[0];
        var p = s[1];
        WriteLine(d + (long)d*p/100);
    }
}