Lightchan's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| Panasonic Programming Contest 2025（AtCoder Beginner Contest 427） | 9081 | - | - | - | ||
| AtCoder Beginner Contest 436 | 10100 | 49 |  2 |
- | ||
| AtCoder Beginner Contest 438 | 7902 | - | - | - | ||
| AtCoder Beginner Contest 439 | 6903 | 270 | 21 |
+19 | ||
| AtCoder Beginner Contest 440 | 7216 | 371 | 53 |
+32 | ||
| AtCoder Beginner Contest 441 (Promotion of Engineer Guild Fes) | 7898 | 294 | 79 |
+26 | ||
| JPRS Programming Contest 2026#1 (AtCoder Beginner Contest 442) | 6212 | 510 |  121 |
+42 |