1 files changed, 21 insertions, 0 deletions
diff --git a/2020/fourteen.nim b/2020/fourteen.nim
new file mode 100644
index 0000000..e333cf9
--- /dev/null
+++ b/2020/fourteen.nim
@@ -0,0 +1,21 @@
+# Day Fourteen: Docking Data
+import os, strutils, sequtils
+
+let input: string = paramStr(1)
+let program: seq[tuple[address, value: string]] = map(split(strip(readFile(input)), '\n'),
+  func (param: string): (string, string) =
+    (split(param, " = ")[0], split(param, " = ")[1]))
+
+var mask: string = repeat('X', 36)
+var memory: seq[int] = newSeq[int](99999)
+for line in program:
+  if line.address == "mask":
+    mask = line.value
+  elif line.address[0..2] == "mem":
+    var value: string = toBin(parseInt(line.value), 36)
+    for i, bit in mask:
+      if bit != 'X':
+        value[i] = bit
+    memory[parseInt(line.address[4..^2])] = fromBin[int](value)
+
+echo foldl(memory, a + b)