derby's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 428 | 6705 | 408 |  20 |
- | ||
| Polaris.AI Programming Contest 2025（AtCoder Beginner Contest 429） | 8813 | 123 | 36 |
+16 | ||
| AtCoder Beginner Contest 430 | 4882 | 514 | 83 |
+47 | ||
| OMRON Corporation Programming Contest 2025 #2 (AtCoder Beginner Contest 432) | 7949 | 152 | 91 |
+8 | ||
| AtCoder Beginner Contest 433 | 8194 | 239 |  109 |
+18 | ||
| Ｓｋｙ Inc, Programming Contest 2025 (AtCoder Beginner Contest 434) | 6164 | 272 | 127 |
+18 | ||
| AtCoder Beginner Contest 435 | 7032 | 353 | 151 |
+24 |