_sb_'s Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 259 | 1187 | 1401 |  243 |
- | ||
| AtCoder Regular Contest 144 | 1151 | 1369 |  639 |
+396 | ||
| AtCoder Beginner Contest 261 | 357 | 1981 |  1097 |
+458 | ||
| AtCoder Grand Contest 066 | 421 | - | - | - |