Chachou's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 399 | 2032 | 1227 |  157 |
- | ||
| AtCoder Beginner Contest 405 | 5749 | 632 |  247 |
+90 | ||
| Panasonic Programming Contest 2025（AtCoder Beginner Contest 406） | 5323 | - | - | - | ||
| AtCoder Beginner Contest 407 | 4278 | 818 |  361 |
+114 | ||
| AtCoder Beginner Contest 408 | 4012 | 808 |  450 |
+89 | ||
| AtCoder Beginner Contest 409 | 4880 | 720 | 494 |
+44 | ||
| AtCoder Beginner Contest 410 | 3929 | 854 |  555 |
+61 | ||
| Japan Registry Services (JPRS) Programming Contest 2025#2 (AtCoder Beginner Contest 415) | 7504 | - | - | - |