diff options
| -rw-r--r-- | aoc2021/Day18.cs | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/aoc2021/Day18.cs b/aoc2021/Day18.cs index eb13164..c8ea308 100644 --- a/aoc2021/Day18.cs +++ b/aoc2021/Day18.cs @@ -33,7 +33,7 @@ public sealed class Day18 : Day private static Tree<int> Add(Tree<int> a, Tree<int> b) { - var reduced = new Tree<int>(new Tree<int>.Node(null, -1) {Left = a.Root, Right = b.Root}); + var reduced = new Tree<int>(new(null, -1) {Left = a.Root, Right = b.Root}); Reduce(reduced); return reduced; } @@ -72,9 +72,9 @@ public sealed class Day18 : Day { if (node.Data != -1 || node.DistanceToParent(t.Root) < 4) return false; var left = SiblingOf(node, n => n.Right, n => n.Left); - if (left != null) left.Data += node.Left.Data; + if (left != null) left.Data += node.Left!.Data; var right = SiblingOf(node, n => n.Left, n => n.Right); - if (right != null) right.Data += node.Right.Data; + if (right != null) right.Data += node.Right!.Data; node.Left = null; node.Right = null; |