Matrix Data Structure Problem
I was thinking of this problem.
You have a matrix of size n by n (n<=10^5). You have to support q<=10^5 operations of 3 types (online):
Given (i, l, r, x), set a[i][l...r] to x
Given (l, r, x), set a[1...n][l...r] to x
Given (i, l, r), find the minimum of a[i][l...r]
Is there any way to support these operations efficiently?
| # | User | Rating |
|---|---|---|
| 1 | ecnerwala | 3648 |
| 2 | Benq | 3580 |
| 3 | orzdevinwang | 3570 |
| 4 | cnnfls_csy | 3569 |
| 5 | Geothermal | 3568 |
| 6 | tourist | 3565 |
| 7 | maroonrk | 3530 |
| 8 | Radewoosh | 3520 |
| 9 | Um_nik | 3481 |
| 10 | jiangly | 3467 |
| # | User | Contrib. |
|---|---|---|
| 1 | maomao90 | 174 |
| 2 | adamant | 164 |
| 2 | awoo | 164 |
| 4 | TheScrasse | 160 |
| 5 | nor | 159 |
| 6 | maroonrk | 156 |
| 7 | -is-this-fft- | 150 |
| 8 | SecondThread | 147 |
| 9 | orz | 146 |
| 10 | pajenegod | 145 |
