My doubt is in problem "Riding the Fences" from Usaco site. I don't know the main idea for solve this problem. I know, is base in eulerian graph, but i don't see how solve it. Thank you for the help.
→ Pay attention
Before contest
Codeforces Round (Div. 1, Based on Zhili Cup 2026)
5 days
Register now »
Codeforces Round (Div. 1, Based on Zhili Cup 2026)
5 days
Register now »
*has extra registration
Before contest
Codeforces Round (Div. 2, Based on Zhili Cup 2026)
5 days
Register now »
Codeforces Round (Div. 2, Based on Zhili Cup 2026)
5 days
Register now »
*has extra registration
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | Benq | 3792 |
| 2 | VivaciousAubergine | 3647 |
| 3 | Kevin114514 | 3603 |
| 4 | jiangly | 3583 |
| 5 | strapple | 3515 |
| 6 | tourist | 3470 |
| 7 | dXqwq | 3436 |
| 8 | Radewoosh | 3415 |
| 9 | Otomachi_Una | 3413 |
| 10 | Um_nik | 3376 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 158 |
| 2 | adamant | 152 |
| 3 | Proof_by_QED | 146 |
| 3 | Um_nik | 146 |
| 5 | Dominater069 | 144 |
| 6 | errorgorn | 141 |
| 7 | cry | 139 |
| 8 | YuukiS | 135 |
| 9 | chromate00 | 134 |
| 9 | TheScrasse | 134 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2026 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: May/01/2026 02:31:02 (g2).
Desktop version, switch to mobile version.
Supported by
All you need to do is implement the algorithm to find a eulerian tour/circuit. The algorithm is described on this page in the USACO training pages, which you should have already read...
thank you for the help, i understand now!!!