given a NxM integer matrix and i1,j1,i2,j2
such that i1 < i2 and j1 < j2
tell in O(1) that whether all elements in the rectangular submatrix formed by (i1 , j1) , (i1 , j2) , (i2 , j1) , (i2 , j2)
contains all same elements or not .
№ | 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 → |
№ | Пользователь | Вклад |
---|---|---|
1 | awoo | 163 |
2 | maomao90 | 160 |
3 | adamant | 159 |
4 | maroonrk | 152 |
5 | -is-this-fft- | 150 |
6 | atcoder_official | 148 |
6 | SecondThread | 148 |
8 | nor | 147 |
9 | TheScrasse | 146 |
10 | Petr | 144 |
I need help in this question
given a NxM integer matrix and i1,j1,i2,j2
such that i1 < i2 and j1 < j2
tell in O(1) that whether all elements in the rectangular submatrix formed by (i1 , j1) , (i1 , j2) , (i2 , j1) , (i2 , j2)
contains all same elements or not .
Rev. | Язык | Кто | Когда | Δ | Комментарий | |
---|---|---|---|---|---|---|
en2 | Saksham_Sahgal | 2022-05-01 12:51:34 | 211 | |||
en1 | Saksham_Sahgal | 2022-05-01 12:48:15 | 279 | Initial revision (published) |
Название |
---|