AtCoder Beginner Contest 061 will be held.
Time： May 13th (Saturday), 21:00 JST
Duration: 100 minutes
Number of Tasks: 4
writer： Hec
Rating： 0-1199
The point values are: 100 — 200 — 300 — 400
We are looking forward to your participation!
→ Обратите внимание
До соревнования
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
3 дня
Зарегистрироваться »
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
3 дня
Зарегистрироваться »
*есть доп. регистрация
→ Лидеры (рейтинг)
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | tourist | 4009 |
| 2 | jiangly | 3823 |
| 3 | Benq | 3738 |
| 4 | Radewoosh | 3633 |
| 5 | jqdai0815 | 3620 |
| 6 | orzdevinwang | 3529 |
| 7 | ecnerwala | 3446 |
| 8 | Um_nik | 3396 |
| 9 | ksun48 | 3390 |
| 10 | gamegame | 3386 |
| Страны | Города | Организации | Всё → |
→ Лидеры (вклад)
| № | Пользователь | Вклад |
|---|---|---|
| 1 | cry | 167 |
| 2 | maomao90 | 163 |
| 2 | Um_nik | 163 |
| 4 | atcoder_official | 161 |
| 5 | adamant | 159 |
| 6 | -is-this-fft- | 158 |
| 7 | awoo | 157 |
| 8 | TheScrasse | 154 |
| 9 | nor | 153 |
| 9 | Dominater069 | 153 |
→ Найти пользователя
→ Прямой эфир
Codeforces (c) Copyright 2010-2024 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 20.11.2024 10:38:20 (l3).
Десктопная версия, переключиться на мобильную.
При поддержке
Please inform me about the contest's difficulty. Is it suitable for div. 2 ?
How to solve D ?
My idea was to make all the weights negative, and then apply Bellman Ford. If there was any negative cycle the answer would be "inf", else "-1 * dist[N]".
However, i got WA on the last 3 cases. Any help where am i wrong?
Anybody can share accepted code of D?
Yes
In the case that the negative cycle is not found on the path from 1 to N, then the answer should not be inf. For example the answer to the following case should be 1, not inf. 5 5 1 2 1 2 3 1 3 4 1 4 2 1 1 5 1