diff --git a/day15.py b/day15.py
index 0a024bc..acd1ea2 100644
--- a/day15.py
+++ b/day15.py
@@ -4,26 +4,6 @@ from tools.grid import Grid
 from typing import Any, List
 
 
-def getGrid(lines: List[str], multiply: bool = False) -> Grid:
-    size = len(lines)
-    g = Grid()
-    for y, l in enumerate(lines):
-        for x, v in enumerate(map(int, l)):
-            g.set(Coordinate(x, y), v)
-            if not multiply:
-                continue
-
-            for x2 in range(5):
-                for y2 in range(5):
-                    if x2 == y2 == 0:
-                        continue
-                    nv = 1 + (v + x2 + y2 - 1) % 9
-
-                    g.set(Coordinate(size * x2 + x, size * y2 + y), nv)
-
-    return g
-
-
 class Day(AOCDay):
     inputs = [
         [
@@ -36,13 +16,32 @@ class Day(AOCDay):
         ]
     ]
 
+    def getGrid(self, multiply: bool = False) -> Grid:
+        size = len(self.getInput())
+        g = Grid()
+        for y, l in enumerate(self.getInput()):
+            for x, v in enumerate(map(int, l)):
+                g.set(Coordinate(x, y), v)
+                if not multiply:
+                    continue
+
+                for x2 in range(5):
+                    for y2 in range(5):
+                        if x2 == y2 == 0:
+                            continue
+                        nv = 1 + (v + x2 + y2 - 1) % 9
+
+                        g.set(Coordinate(size * x2 + x, size * y2 + y), nv)
+
+        return g
+
     def part1(self) -> Any:
-        grid = getGrid(self.getInput())
+        grid = self.getGrid()
         path = grid.getPath(Coordinate(0, 0), Coordinate(grid.maxX, grid.maxY), includeDiagonal=False, weighted=True)
         return sum(grid.get(c) for c in path[:-1])
 
     def part2(self) -> Any:
-        grid = getGrid(self.getInput(), True)
+        grid = self.getGrid(True)
         path = grid.getPath(Coordinate(0, 0), Coordinate(grid.maxX, grid.maxY), includeDiagonal=False, weighted=True)
         return sum(grid.get(c) for c in path[:-1])