OBlack's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Regular Contest 078 | 463 | 1555 | 357 | - | ||
| AtCoder Regular Contest 079 | 626 | 1253 | 661 | +304 | ||
| AtCoder Regular Contest 080 | 614 | 1223 | 797 | +136 | ||
| AtCoder Regular Contest 102 | 245 | 1882 | 1100 | +303 |