public BigInteger Solve(BigInteger?input = null)
{
BigInteger result = 0;
for (int i = 1; i < 1000000; i++)
{
if (!GeneralOperationsHelper.IsPallindrome(i))
{
continue;
}
if (!GeneralOperationsHelper.IsPallindrome(Convert.ToString(i, 2)))
{
continue;
}
result += i;
}
return(result);
}
public BigInteger Solve(BigInteger?input = null)
{
int factorial9 = GeneralOperationsHelper.Factorial(9);
BigInteger result = 0;
for (int i = 3; i < 7 * factorial9; i++)
{
int factorialSum = 0;
var iString = i.ToString();
for (int j = 0; j < iString.Length; j++)
{
factorialSum += GeneralOperationsHelper.Factorial(int.Parse(iString[j].ToString()));
}
if (factorialSum == i)
{
result += i;
}
}
return(result);
}