diff --git a/__pycache__/shiroindev.cpython-37.pyc b/__pycache__/shiroindev.cpython-37.pyc
index d2c6f2f..23cc25b 100644
Binary files a/__pycache__/shiroindev.cpython-37.pyc and b/__pycache__/shiroindev.cpython-37.pyc differ
diff --git a/examples.ipynb b/examples.ipynb
index 4a51155..6c39d63 100644
--- a/examples.ipynb
+++ b/examples.ipynb
@@ -4,7 +4,18 @@
    "cell_type": "code",
    "execution_count": 1,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "/home/grzegorz/shiroindev/shiroindev.py:42: DeprecationWarning: invalid escape sequence \\^\n",
+      "  formula=re.sub('\\^{(.)}',r'^\\1',latex(formula,fold_short_frac=True).replace(' ','').replace('\\\\left(','(').replace('\\\\right)',')'))\n",
+      "/home/grzegorz/shiroindev/shiroindev.py:43: DeprecationWarning: invalid escape sequence \\{\n",
+      "  return re.sub('\\{(\\(.+?\\))\\}',r'\\1',formula)\n"
+     ]
+    }
+   ],
    "source": [
     "from shiroindev import *\n",
     "sSeed=1"
@@ -758,8 +769,8 @@
       "status: 0\n",
       "From weighted AM-GM inequality:\n",
       "$$2a^2b^2c^3d \\le a^3bc^2d^2+ab^3c^4$$\n",
-      "$$4a^2bc^3d \\le a^3bc^2d^2+a^3c^2d^2+ab^3c^4+ac^4$$\n",
       "$$2a^2c^3d \\le a^3c^2d^2+ac^4$$\n",
+      "$$4a^2bc^3d \\le a^3bc^2d^2+a^3c^2d^2+ab^3c^4+ac^4$$\n",
       "\n",
       "$$  0  \\le \n",
       "4a^3bcd^3+2a^3bd^4+2a^3cd^3+2a^2b^2cd^3+4a^2bc^2d^2+12a^2bcd^3+6a^2bd^4+4a^2c^2d^2+6a^2cd^3+4ab^3c^3d+2ab^3c^2d^2+6ab^2c^4+8ab^2c^3d+4ab^2c^2d^2+4ab^2cd^3+6abc^4+4abc^3d+6abc^2d^2+12abcd^3+6abd^4+4ac^2d^2+6acd^3+2b^3c^3d+2b^3c^2d^2+4b^2c^3d+4b^2c^2d^2+2b^2cd^3+2bc^3d+4bc^2d^2+4bcd^3+2bd^4+2c^2d^2+2cd^3  $$\n",
diff --git a/shiroindev.py b/shiroindev.py
index ca1e3c2..c811989 100644
--- a/shiroindev.py
+++ b/shiroindev.py
@@ -1,4 +1,6 @@
-from __future__ import print_function
+from __future__ import (absolute_import, division,
+                        print_function, unicode_literals)
+from builtins import *
 import warnings,operator
 warnings.filterwarnings("ignore")    
 #Seed is needed to select the weights in linprog function.