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diff --git a/Readme.md b/Readme.md
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 The shortest and most readable code wins!
 
-Feel free to contribute :)
+Contributions are very welcomed and needed,  if you want to contribute please
+open a Pull Request.
 
 Structure:
 
 `semester/L#/submitter's name`
+
+## Tips
+
+![Debugging is essential](img/ss_20220916_200135.png)