2019 day 21

2019/d21.py

@@ -0,0 +1,57 @@
+from lib import get_data, str_to_ints
+from d9 import Amp
+
+data = get_data(__file__)
+xs = str_to_ints(data)
+
+script = """NOT A J
+AND A J
+NOT C T
+AND D T
+OR T J
+NOT A T
+OR T J
+"""
+
+a = Amp(xs)
+while not a.done:
+    a.go()
+    if a.input_required:
+        for c in script:
+            a.feed(ord(c))
+        for c in "WALK\n":
+            a.feed(ord(c))
+
+    while a.outputs:
+        c = a.pop()
+        try:
+            chr(c)
+            # print(chr(c), end="")
+        except ValueError:
+            print(c)
+
+script = """NOT C J
+AND H J
+NOT A T
+OR T J
+NOT B T
+OR T J
+AND D J
+"""
+
+a = Amp(xs)
+while not a.done:
+    a.go()
+    if a.input_required:
+        for c in script:
+            a.feed(ord(c))
+        for c in "RUN\n":
+            a.feed(ord(c))
+
+    while a.outputs:
+        c = a.pop()
+        try:
+            chr(c)
+            # print(chr(c), end="")
+        except ValueError:
+            print(c)

README.md

@@ -134,7 +134,8 @@ Solutions and utility script for Advent of Code challenges in Python.
 - Day 18: days    (Slow and slow algorithm.)
 - Day 19: 40:00   (Way too slow! Oversight error. Come on.)
 - Day 20: days    (Not actually that hard but I struggled for no reason.) 
-- Day 21:
+- Day 21: days    (But it was super fun!)
+- Day 22:
 
 ## AoC 2020