We know that the solution of x1 + x2 + x3 .. xk = n, where xi >= 0 is given by nCr(n + k — 1, n). I was trying to solve a problem in which I had the constraints that all the xi were bounded by ai meaning (xi >= 0 and xi <= ai for all i from 1 to k). I know how to solve this problem using hand (by findind the coefficients and all) but how do I write a code for it or is it possible to write a code for it?
→ Обратите внимание
→ Лидеры (рейтинг)
| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | tourist | 3690 |
| 2 | jiangly | 3647 |
| 3 | Benq | 3581 |
| 4 | orzdevinwang | 3570 |
| 5 | Geothermal | 3569 |
| 5 | cnnfls_csy | 3569 |
| 7 | Radewoosh | 3509 |
| 8 | ecnerwala | 3486 |
| 9 | jqdai0815 | 3474 |
| 10 | gyh20 | 3447 |
| Страны | Города | Организации | Всё → |
→ Лидеры (вклад)
| № | Пользователь | Вклад |
|---|---|---|
| 1 | maomao90 | 174 |
| 2 | awoo | 164 |
| 3 | adamant | 162 |
| 4 | TheScrasse | 160 |
| 5 | nor | 158 |
| 6 | maroonrk | 156 |
| 7 | -is-this-fft- | 152 |
| 8 | orz | 146 |
| 9 | pajenegod | 145 |
| 9 | Petr | 145 |
→ Найти пользователя
→ Прямой эфир
Codeforces (c) Copyright 2010-2024 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 12.05.2024 23:02:04 (j1).
Десктопная версия, переключиться на мобильную.
При поддержке
Do you have some constraints on $$$n$$$ and $$$k$$$? If they are low, you can use dynamic programming: let $$$\mathrm{dp}[i][j]$$$ be the number of sequences with length $$$i$$$ and sum $$$j$$$.