idk

Signed-off-by: MisileLab <[email protected]>

projects/xobusy/bojs/17954.py

@@ -0,0 +1,30 @@
+from math import ceil
+a, b = (False, False)
+c = [[],[]]
+d = int(input())
+e = 0
+_cac = ceil((d*2) / 4)
+
+for i in range(1, d*2+1):
+    if a:
+        if not b:
+            c[0].insert(0, i)
+        else:
+            c[0].insert(-1, i)
+            a = not a
+    elif not b:
+        c[1].insert(0, i)
+    else:
+        c[1].insert(-1, i)
+        a = not a
+    b = not b
+    t = ceil(i / 4)
+    e += (_cac-t) * i
+
+if d % 2 == 1:
+    c[0].insert(-1, max(c[1][0], c[1][-1]))
+    c[1].remove(max(c[1][0], c[1][-1]))
+
+print(e)
+print(*c[0])
+print(*c[1])