# Info & Summary

• Date: 2025-04-13
• Completion Status: A ✅ / B ✅ / C ✅ / D ✅ / E ✅ / F ❌ / G ❌ / H ❌
• Problem Type:

Problem	Type(s)	Data Structure / Algo	🔥 Key Insight / Mark
E	Bitwise operation	Bitmask/Bitwise	🔥⭐
F	Constructive	Constructive/Math	🌀⭐🧠
G	Implementation	Implementation/Math	🌀⚠️
H	Number theory/Math	Number theory/Math/Binary search	🌀⚠️