Day03: Add part 2 statement and remove unnecessary initialization

AdventOfCode2018/Day03.cs

@@ -51,6 +51,14 @@ namespace AdventOfCode2018
 
     If the Elves all proceed with their own plans, none of them will have enough fabric. How many square inches of fabric are within two or more claims?
 
+    --- Part Two ---
+
+    Amidst the chaos, you notice that exactly one claim doesn't overlap by even a single square inch of fabric with any other claim. If you can somehow draw attention to it, maybe the Elves will be able to make Santa's suit after all!
+
+    For example, in the claims above, only claim 3 is intact after all claims are made.
+
+    What is the ID of the only claim that doesn't overlap?
+
     */
 
     public class Day03
@@ -62,14 +70,6 @@ namespace AdventOfCode2018
             const int edgeSize = 1000;
             int[,] cells = new int[edgeSize, edgeSize];
 
-            for (int j = 0; j < edgeSize; j++)
-            {
-                for (int i = 0; i < edgeSize; i++)
-                {
-                    cells[i, j] = 0;
-                }
-            }
-
             foreach (Claim claim in claims)
             {
                 for (int j = 0; j < claim.Height; j++)