Update app.py

app.py

@@ -181,12 +181,11 @@ def int_to_bin(n: int, d: int) -> str:
 
 # ---------- Deterministic 2D layout (no rotation) ----------
 # Even bits → X offsets, odd bits → Y offsets, decreasing magnitudes.
-def layout_positions(d: int, base: float = 900.0):
+def layout_positions(d: int, base: float = 900.0, mode: str = "default"):
     n = 1 << d # number of nodes = 2^d
 
-
     if mode == "bipartite":
-        # Left: odd parity, Right: even parity (as requested)
+        # Left: odd parity, Right: even parity
         odds  = [v for v in range(n) if (bin(v).count("1") % 2) == 1]
         evens = [v for v in range(n) if (bin(v).count("1") % 2) == 0]