Please give some online judge problems in which prefix sum( also known as cumulative sum) technique is useful. and freuqancy array
→ Обратите внимание
До соревнования
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 дня
Зарегистрироваться »
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 дня
Зарегистрироваться »
*есть доп. регистрация
→ Лидеры (рейтинг)
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | tourist | 3993 |
| 2 | jiangly | 3743 |
| 3 | orzdevinwang | 3707 |
| 4 | Radewoosh | 3627 |
| 5 | jqdai0815 | 3620 |
| 6 | Benq | 3564 |
| 7 | Kevin114514 | 3443 |
| 8 | ksun48 | 3434 |
| 9 | Rewinding | 3397 |
| 10 | Um_nik | 3396 |
| Страны | Города | Организации | Всё → |
→ Лидеры (вклад)
| № | Пользователь | Вклад |
|---|---|---|
| 1 | cry | 167 |
| 2 | Um_nik | 163 |
| 3 | maomao90 | 162 |
| 3 | atcoder_official | 162 |
| 5 | adamant | 159 |
| 6 | -is-this-fft- | 158 |
| 7 | awoo | 155 |
| 8 | TheScrasse | 154 |
| 9 | Dominater069 | 153 |
| 10 | nor | 152 |
→ Найти пользователя
→ Прямой эфир
Codeforces (c) Copyright 2010-2024 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 26.11.2024 18:34:04 (j2).
Десктопная версия, переключиться на мобильную.
При поддержке
can you tell me how to approach RANGESUM using prefix array. We're adding a new element every time here, we'll have to calculate prefix sum every time.
Store the array as its reverse and then use prefix sum.
Here are some : - https://codeforces.me/contest/961/problem/B
https://atcoder.jp/contests/abc186/tasks/abc186_d
https://codeforces.me/contest/327/problem/A
https://codeforces.me/contest/433/problem/B
https://atcoder.jp/contests/abc182/tasks/abc182_d
https://leetcode.com/problems/grumpy-bookstore-owner/
https://www.codechef.com/problems/JUN2
https://codeforces.me/contest/729/problem/B
2-d Prefix Sums :
https://www.codechef.com/APRIL21B/problems/KAVGMAT
https://cses.fi/problemset/task/1652
https://www.codechef.com/IARCSJUD/problems/TIMBER/
try edu