guoyonghan's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 419 | 9909 | 144 |  7 |
- | ||
| AtCoder Beginner Contest 420 | 9146 | 139 | 22 |
+15 | ||
| AtCoder Beginner Contest 421 | 9739 | 148 | 37 |
+15 |