happer's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| CodeQUEEN 2026 -qual- (AtCoder Beginner Contest 462) | 2632 | 1222 |  155 |
- | ||
| AtCoder Beginner Contest 463 | 3569 | 1069 |  399 |
+244 | ||
| Japanese Student Championship 2026 -Advance- Qualification (AtCoder Beginner Contest 464) | 1095 | 1575 |  777 |
+378 | ||
| AtCoder Beginner Contest 466 | 3126 | 1173 |  854 |
+77 | ||
| AtCoder Regular Contest-- 224 | 957 | 1443 |  976 |
+122 |