프롬프트 없음
| 실행 시간 제한 | 메모리 제한 |
|---|---|
| 1 초 | 512 MB |
3 Buttercup must be milked beside Bella Blue must be milked beside Bella Sue must be milked beside Beatrice
Beatrice Sue Belinda Bessie Betsy Blue Bella Buttercup
출처: USACO 2019 December Contest, Bronze Problem 3. Livestock Lineup