Nested Loops Lab 6.Travelling

Visual Studio ми работи, но като пусна в judge и дава грешка със звездички:

Unhandled Exception: System.FormatException: Input string was not in a correct format.
   at System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt)
   at travelling.Program.Main(String[] args)

Не мога да разбера къде греша.

ето задачата:

Документ: https://softuni.bg/downloads/svn/programming-basics-v4/course-content/course-resources/CSharp/07.PB-CSharp-Nested-Loops/Original-Documents/07.3 PB-CSharp-Nested-Loops-Lab.docx

using System;

namespace travelling
{
class Program
{
static void Main(string[] args)
{

string destination = Console.ReadLine();
double budget = double.Parse(Console.ReadLine());
double totalsaved = 0;
double moneySaved = 0;

while (destination!="End")
{

while (totalsaved < budget)
{
moneySaved = double.Parse(Console.ReadLine());
totalsaved += moneySaved;

}
Console.WriteLine($"Going to {destination}!");

destination = Console.ReadLine();
budget = double.Parse(Console.ReadLine());
totalsaved = 0;

}

}
}
}

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace travelling { class Program { static void Main(string[] args) { string destination = Console.ReadLine(); double totalsaved = 0; double moneySaved = 0; double budget = 0.0; while (destination != "End") { budget = double.Parse(Console.ReadLine()); while (totalsaved < budget) { moneySaved = double.Parse(Console.ReadLine()); totalsaved += moneySaved; } Console.WriteLine($"Going to {destination}!"); destination = Console.ReadLine(); totalsaved = 0; } } } }