# Info & Summary

• Date: 2025-05-17
• Completion Status: A ✅ / B ✅ / C ❌ / D ✅ / E ❌ / F ❌ / G ❌
• Problem Type:

Problem	Type(s)	Data Structure / Algo	🔥 Key Insight / Mark
C	String	Brute Force	🌀
E	Digit DP	Digit DP	🌀
F	Tree	DFS & Fenwick Tree	🌀
G	DP	DP/Fenwick Tree	🌀