create dev channel

zeta/py/completed/2447.py

@@ -0,0 +1,19 @@
+N = int(input())
+
+A = ([" "] * N + ["\n"]) * N
+
+def B(n, x, y):
+    global A
+    if n == 0:
+        A[(N+1)*y+x] = "*"
+        return
+    c = n//3
+    for i in range(3):
+        for j in range(3):
+            if i == 1 and j == 1:
+                continue
+            B(c, x+c*i, y+c*j)
+
+B(N, 0, 0)
+for i in A:
+    print(i, end="")