[Python/2016] Move solutions into .py files

Python/2016/25.py

@@ -0,0 +1,52 @@
+from lib import *
+
+input = read_input(2016, 25)
+
+program = input.splitlines()
+
+
+def simulate(a):
+    registers = {k: 0 for k in "abcd"}
+    registers["a"] = a
+    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 == "out":
+            yield read(x)
+            pc += 1
+
+
+def test(a):
+    for i, x in enumerate(simulate(a)):
+        if i % 2 != x:
+            return False
+
+        if i > 100:
+            return True
+
+    return False
+
+
+a = 0
+while not test(a):
+    a += 1
+
+print(a)