Halfplane's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 296 | 857 | 1502 |  313 |
- | ||
| AtCoder Regular Contest 159 | 609 | 1691 |  860 |
+547 | ||
| NS Solutions Corporation Programming Contest 2023（AtCoder Beginner Contest 303） | 83 | 2400 |  1420 |
+560 |