[Python/2016] Move solutions into .py files

Python/2016/19.py

@@ -0,0 +1,17 @@
+from lib import *
+
+input = read_input(2016, 19)
+
+n = int(input)
+
+print((n - (1 << n.bit_length() - 1) << 1) + 1)
+
+n = int(input)
+l = int(math.log(n, 3))
+x = 3**l + 1
+y = 2 * 3**l
+z = 3 ** (l + 1)
+if n <= y:
+    print(n - x + 1)
+else:
+    print(n * 2 - y - x + 1)