a_r_'s Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 335 (Sponsored by Mynavi) | 3831 | 817 |  56 |
- | ||
| SuntoryProgrammingContest2024（AtCoder Beginner Contest 357） | 6603 | 491 |  118 |
+62 | ||
| AtCoder Beginner Contest 358 | 3819 | 903 |  248 |
+130 | ||
| UNIQUE VISION Programming Contest 2024 Summer (AtCoder Beginner Contest 359) | 10735 | - | - | - | ||
| Denso Create Programming Contest 2024（AtCoder Beginner Contest 361） | 5669 | 624 |  305 |
+57 | ||
| Japan Registry Services (JPRS) Programming Contest 2024#2 (AtCoder Beginner Contest 364) | 10004 | 49 | 229 |
-76 | ||
| Japan Registry Services (JPRS) Programming Contest 2025#2 (AtCoder Beginner Contest 415) | 6671 | 413 | 250 |
+21 | ||
| AtCoder Beginner Contest 416 | 3629 | 924 | 354 |
+104 | ||
| AtCoder Beginner Contest 417 | 2691 | 1078 |  487 |
+133 | ||
| AtCoder Regular Contest 203 (Div. 2) | 1568 | - | - | - |