These days there are tons of problems on string transformation. I don't know any particular way to solve them... sometimes guessing works but surely that's not a good way. So I was wondering if there is any general method to attempt such problems, please share.
Скоро Codeforces Round 1133 (Div. 1, Div. 2)! Регистрация здесь.
→ Обратите внимание
→ Лидеры (рейтинг)
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | Benq | 3676 |
| 2 | Kevin114514 | 3659 |
| 3 | jiangly | 3640 |
| 4 | turmax | 3450 |
| 5 | tourist | 3382 |
| 6 | strapple | 3360 |
| 7 | Um_nik | 3354 |
| 8 | squareOf105 | 3348 |
| 9 | maroonrk | 3312 |
| 10 | idontwannadothis…e | 3191 |
| Страны | Города | Организации | Всё → |
→ Лидеры (вклад)
| № | Пользователь | Вклад |
|---|---|---|
| 1 | Qingyu | 155 |
| 2 | nik_exists | 151 |
| 3 | maspy | 149 |
| 4 | AmShZ | 145 |
| 5 | Um_nik | 143 |
| 6 | Errichto | 139 |
| 7 | BledDest | 136 |
| 8 | adamant | 134 |
| 9 | maroonrk | 132 |
| 10 | cry | 130 |
→ Найти пользователя
→ Прямой эфир
Codeforces (c) Copyright 2010-2026 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 07.11.2026 00:54:50 (f1).
Десктопная версия, переключиться на мобильную.
При поддержке
One of methods is connected with graphs. Try to depict letters as vertices and connections between them as nodes. Then run bfs/dfs and in many cases it's enough to solve 1500-1600 difficulties problems.
Thank you very much. Is there any source on which I can understand it better..
https://codeforces.com
Well, you can try these tasks, based on dsu and topological sort, hidden behind strings, which are extremely important techniques: 510C - Fox And Names, 638B - Making Genome in Berland, 939D - Love Rescue, 1384C - String Transformation 1