docs: absolute value added

Author: CodeTyperPro

docs/guide/dicas.md

@@ -7,6 +7,11 @@
 
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+## Como Praticar Programação Competitiva de Forma Eficaz + Guia de Resolução de Problemas
+- [How to Effectively Practice CP + Problem Solving Guide (Codeforces Blog)](https://codeforces.com/blog/entry/116371)
+- [How to practice Competitive Programming [Um_nik version]](https://codeforces.com/blog/entry/98806)
+- [The Ultimate USACO Practice Method (Reddit)](https://www.reddit.com/r/usaco/comments/pk3tjp/the_ultimate_usaco_practice_method/)
+
 ## 🧩 Dicas e Problemas Frequentes
 
 ### 🐢 Meu código parece ter complexidade aceitável, mas recebo TLE