buchan's Competition History
| Date | Contest | Rank | Performance | New Rating | Diff | |
|---|---|---|---|---|---|---|
| AtCoder Beginner Contest 058 | 361 | 488 | 25 | - | ||
| AtCoder Beginner Contest 163 | 7409 | - | - | - | ||
| AtCoder Beginner Contest 164 | 9846 | 98 | 37 | +12 | ||
| AtCoder Beginner Contest 197（Sponsored by Panasonic） | 5382 | 274 | 64 | +27 | ||
| AtCoder Beginner Contest 198 | 7765 | 34 | 55 | -9 | ||
| ZONe Energy Programming Contest | 6918 | 9 | 41 | -14 |