Score	Problem
1	A Arahc and an Array
1	B Brahc in a String Game
1	C Crahc with a String
1	D Drahc Designs the Map
1	E Erahc Counts Aya
1	F Frahc Finds Forgotten Spell
1	G Grahc Plays Gokémon Po
1	H Hrahc Likes 114514
1	I Irahc inside Icy Caves
1	J Jrahc as a Jewelbreaker
1	K Krahc Paints KPH

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Subject: B1. Brahc in a String Game | Jury @ 2025-8-14 13:59:04

When deleting a substring, its left side and right side will merge together. The whole string will not split.
Subject: H1. Hrahc Likes 114514 | Jury @ 2025-8-14 13:18:38

Need to mod 114514.

Hello ACM 2025

Problems