public void Part1()
{
var answer = Day04.Part1();
answer.Should().NotBe(-1);
answer.Should().Be(346386L);
}
public void Part2()
{
// To complete this puzzle from scratch, use a seed of 0. This takes ~5s even with optimisations, so I don't want to run it with the full test suite.
// A pre-computed seed can be used if we already know that the answer is not found < this seed.
var answer = Day04.Part2(9958000);
answer.Should().NotBe(-2);
answer.Should().Be(9958218L);
}