diff --git a/.idea/misc.xml b/.idea/misc.xml
index 85992c8..4da632d 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -2,7 +2,7 @@
   <component name="Black">
     <option name="sdkName" value="Python 3.11 (AdventOfCode2023)" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="Python 3.11 (AdventOfCode2023)" project-jdk-type="Python SDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="Python 3.10 (AdventOfCode2023)" project-jdk-type="Python SDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/13/test.py b/13/test.py
new file mode 100644
index 0000000..335752b
--- /dev/null
+++ b/13/test.py
@@ -0,0 +1,15 @@
+import math
+test_a = "Hallo_Welt"
+test_b = "Hell_Planet"
+
+def slice(txt):
+    l=len(txt)
+    for i in range(1,l):
+        if i<=l:
+            print(f"{txt[:i+1]}   {round(i/2)}" )
+        else:
+            print(txt[i])
+
+
+
+print(slice(test_a))