f(l, r) = max(al,al+1...ar), g(l, r) = min(al, al+1...ar)
How can i calc ∑∑f(l,r) * g(l,r) mod 1e9 + 7?
→ Pay attention
Before contest
Codeforces Round 940 (Div. 2) and CodeCraft-23
42:46:43
Register now »
Codeforces Round 940 (Div. 2) and CodeCraft-23
42:46:43
Register now »
*has extra registration
→ Top rated
| # | 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 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | maomao90 | 174 |
| 2 | awoo | 164 |
| 2 | adamant | 164 |
| 4 | TheScrasse | 159 |
| 4 | nor | 159 |
| 6 | maroonrk | 156 |
| 7 | -is-this-fft- | 150 |
| 8 | SecondThread | 147 |
| 9 | orz | 146 |
| 10 | pajenegod | 145 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Apr/19/2024 22:48:18 (g1).
Desktop version, switch to mobile version.
Supported by
