In question C of Codeforces round #728 Div 2, my submission passed the pretests but failed system tests on test case 11 which is same as the sample test case. How is this possible?
→ Обратите внимание
→ Трансляции
→ Лидеры (рейтинг)
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | tourist | 3803 |
| 2 | jiangly | 3707 |
| 3 | Benq | 3627 |
| 4 | ecnerwala | 3584 |
| 5 | orzdevinwang | 3573 |
| 6 | Geothermal | 3569 |
| 6 | cnnfls_csy | 3569 |
| 8 | Radewoosh | 3542 |
| 9 | jqdai0815 | 3532 |
| 10 | gyh20 | 3447 |
| Страны | Города | Организации | Всё → |
→ Лидеры (вклад)
| № | Пользователь | Вклад |
|---|---|---|
| 1 | awoo | 163 |
| 2 | adamant | 161 |
| 3 | maomao90 | 160 |
| 4 | maroonrk | 152 |
| 5 | -is-this-fft- | 151 |
| 6 | nor | 149 |
| 7 | atcoder_official | 147 |
| 7 | SecondThread | 147 |
| 9 | TheScrasse | 146 |
| 10 | Petr | 144 |
→ Найти пользователя
→ Прямой эфир
Codeforces (c) Copyright 2010-2024 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 05.07.2024 17:40:18 (j1).
Десктопная версия, переключиться на мобильную.
При поддержке
Bruh...
pre[0] = a[0];
pre[1] = a[1];
should obviously give RTE for n = 1. Idk why it didnt give RTE on 1st case lol.
If I'm not wrong then you have a line written like vll pre(n) ... Basically size is 1 if n is 1 , Now few lines after you are writing pre[1] = a[....] Which is not possible when size is 1 . So it gives a runtime error when n = 1
In pretests n=1 was the last case so even after the runtime your answers were printed correct so the solution was lucky enough to pass the pretest but in #11 that's not the case bcz n=1 is at the top .
Auto comment: topic has been updated by rupinderg00 (previous revision, new revision, compare).
[DELETED]
When you coding sometimes you don't have to worry much about memory limit, that's why you may wanna spare some space in array/vector to avoid FST in the future.
I think he knows his mistake and its correction. He needs the explaination why this didn't fail on the sample test 1 and why the same sol failed on test 11 while both test cases are same just there is difference in the ordering.
I am not sure why this occurred. This is strange. May be spryzen_v3 is correct.
Yeah now I just think again and it's weird when the author has test 11 in reverse compare to test 1, but still, it's even weirder when his solution passed the first test.