Problem 3: Codeforces 877E

Prerequisits:

  • Segment trees with lazy propagation

This Tutorial Includes:

  • How to use a segment tree to query a subtree
  • The solution to 877E

Hashing Tutorial

Prerequisits:

  • Loops

This Tutorial Includes:

  • The purpose of hashing
  • Rolling hashes
  • Modulo Inverse