public static int Solve()
{
List <int> successfulStarts = new List <int>();
List <int> chain = new List <int>();
for (int i = 3; i < 1000000; i++)
{
chain.Add(i);
int current = (int)i.ToString().Sum(x => EulerUtilities.Factorial(x - 48));
while (!chain.Contains(current))
{
chain.Add(current);
current = (int)current.ToString().Sum(x => EulerUtilities.Factorial(x - 48));
if (chain.Count == 60 && chain.Contains(current))
{
successfulStarts.Add(i);
}
if (chain.Count > 60)
{
break;
}
}
chain.Clear();
}
return(successfulStarts.Count);
}
public static int Solve()
{
int totalSum = 0;
for (int i = 10; i < 2540160; i++)
{
int sum = 0;
foreach (char c in i.ToString())
{
sum += (int)EulerUtilities.Factorial((int)Char.GetNumericValue(c));
}
if (sum == i)
{
totalSum += i;
}
}
return(totalSum);
}