I submitted code for Div2 408 Problem C. And it showed runtime error for the test case 2 while on my pc it is giving fine result although my algo is wrong but I still don't get why this one occured I check the same code on hackerrank and it gave proper result there too. Can anyone tell what's happened? this is my code
→ Pay attention
→ Streams
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | Benq | 3792 |
| 2 | VivaciousAubergine | 3647 |
| 3 | Kevin114514 | 3603 |
| 4 | jiangly | 3583 |
| 5 | turmax | 3559 |
| 6 | tourist | 3541 |
| 7 | strapple | 3515 |
| 8 | ksun48 | 3461 |
| 9 | dXqwq | 3436 |
| 10 | Otomachi_Una | 3413 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 157 |
| 2 | adamant | 153 |
| 3 | Um_nik | 147 |
| 4 | Proof_by_QED | 146 |
| 5 | Dominater069 | 145 |
| 6 | errorgorn | 142 |
| 7 | cry | 139 |
| 8 | YuukiS | 135 |
| 9 | TheScrasse | 134 |
| 10 | chromate00 | 133 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2026 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Apr/19/2026 02:00:36 (g2).
Desktop version, switch to mobile version.
Supported by
I can tell you that int pretest 2, when your program is running at line 75,
cal(root)(whichroot=4) calledcal(2), then calledcal(1), then at line 36,neighbor.size()is1but you tried to readneighbor[j]whichj = 1, and it caused RE.