diff --git a/branchless.py b/branchless.py
index 2d3490a..c7a44eb 100644
--- a/branchless.py
+++ b/branchless.py
@@ -26,6 +26,26 @@ def stringcompare(a,b):
   return tmp == 0
 
 
+def lowerbound(x, t):
+  #base = t
+  #l = len(t)
+  #while(l > 1):
+  #  half = l >> 1
+  #  base += (base[half -1] < x) * half
+  #  l -= half
+  #return base
+  k = 1
+  l = len(t)
+  while k <= l:
+    #print(t[k])
+    k = (k << 1) + (t[k] < x)
+  #return k.bit_count(),k
+  #k >>= k.bit_count()
+  #print(bin(k))
+  #return t[k]
+  #return k.bit_count()
+  return k
+
 def test():
   assert(IsOdd(3) == True)
   assert(IsOdd(2) == False)
@@ -55,3 +75,10 @@ def test():
 
 
 test()
+
+for i in range(0, 10):
+  k = lowerbound(i,[0,1,2,3,4,5,6,7,8,9])
+  print(i, k, k.bit_count())
+
+print(lowerbound(5,[6, 3, 7, 1, 5, 8, 9, 0, 2, 4]))
+
diff --git a/heaps.py b/heaps.py
index 038b1db..179e1f1 100644
--- a/heaps.py
+++ b/heaps.py
@@ -9,7 +9,7 @@ def heaps(k, A):
     yield A
   else:
     for i  in range(0,  k):
-      yield from heap(k-1, A)
+      yield from heaps(k-1, A)
       if k & 1 == 0:
         A[i],A[k-1] = A[k-1],A[i]
       else:
@@ -31,5 +31,24 @@ def heaps_count_swaps(k, A):
   return c
 
 
-A038156 = lambda n: heaps_count_swaps(n, list(range(0,n)))
+#A038156 = lambda n: heaps_count_swaps(n, list(range(0,n)))
+
+def a(n):
+  m=0
+  L = list(range(0,n))
+  for p in heaps(len(L),L):
+    m = max(m,Permutation(p).rank())
+  return m
+
+
+def a(n):
+  m=0
+  L = list(range(0,n))
+  for p in heaps(len(L),L):
+    m = Permutation(p).rank()
+  return m
+
+
+
+print([a(n) for n in range(0,10)])
 
diff --git a/mass_resolv.sh b/mass_resolv.sh
new file mode 100644
index 0000000..0053a07
--- /dev/null
+++ b/mass_resolv.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+# Author Darío Clavijo 2024
+cat $1 | nslookup | grep -e "[Name|Address]"  | grep -e "#" -v | grep -e "Non" -v | grep -e "Server" -v | sed -e 's/\s//g;s/Name://g;s/Address://g;' | awk '{split($0,col1); getline; for (i=1; i<=NF; i++) print col1[i], $i}'