[Python/2016] Move solutions into .py files

Python/2016/23.py

@@ -0,0 +1,73 @@
+from lib import *
+
+input = read_input(2016, 23)
+
+program = input.splitlines()
+
+registers = {k: 0 for k in "abcd"}
+
+
+def simulate():
+    pc = 0
+
+    while pc < len(program):
+        cmd, x, y, *_ = program[pc].split() + [None]
+
+        read = lambda a: registers[a] if a in registers else int(a)
+
+        if cmd == "cpy":
+            if y in registers:
+                registers[y] = read(x)
+
+            pc += 1
+
+        elif cmd == "inc":
+            if x in registers:
+                registers[x] += 1
+
+            pc += 1
+
+        elif cmd == "dec":
+            if x in registers:
+                registers[x] -= 1
+
+            pc += 1
+
+        elif cmd == "jnz":
+            if read(x) and y is not None:
+                pc += read(y) or 1
+
+            else:
+                pc += 1
+
+        elif cmd == "tgl":
+            if pc + (x := read(x)) in range(len(program)):
+                cmd, args = program[pc + x].split(maxsplit=1)
+
+                if cmd == "inc":
+                    cmd = "dec"
+
+                elif cmd in ["dec", "tgl"]:
+                    cmd = "inc"
+
+                elif cmd == "jnz":
+                    cmd = "cpy"
+
+                elif cmd in ["cpy"]:
+                    cmd = "jnz"
+
+                program[pc + x] = f"{cmd} {args}"
+
+            pc += 1
+
+    return registers["a"]
+
+
+registers["a"] = 7
+print(simulate())
+
+
+program = input.splitlines()
+registers = {k: 0 for k in "abcd"}
+registers["a"] = 7
+print(math.factorial(12) + simulate() - math.factorial(7))