_Charles_'s Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 448 | 3419 | 1023 |  95 |
- | ||
| AtCoder Beginner Contest 449 | 4798 | 819 |  228 |
+133 | ||
| AtCoder Beginner Contest 452 | 3040 | 1143 |  462 |
+234 | ||
| Keysight Technologies Programming Contest（AtCoder Beginner Contest 454） | 3812 | 925 |  557 |
+95 | ||
| Ｓｋｙ Inc, Programming Contest 2026 (AtCoder Beginner Contest 455) | 10243 | - | - | - | ||
| AtCoder Beginner Contest 458 | 3030 | 1158 |  682 |
+125 | ||
| CodeQUEEN 2026 -qual- (AtCoder Beginner Contest 462) | 4902 | 837 |  702 |
+20 |