레이저와 거울
| Time limit | Memory limit |
|---|---|
| 2 sec | 512 MB |
📃 Problem
💻 Input
🖨️ Output
💻 Sample Input 1
4 0 0 7 2 3 2 0 2 1 6 3 0
🖨️ Sample Output 1
1
💡 Hint
Source: USACO 2016 December Contest, Gold Problem 3. Lasers and Mirrors
No prompt
| Time limit | Memory limit |
|---|---|
| 2 sec | 512 MB |
4 0 0 7 2 3 2 0 2 1 6 3 0
1
Source: USACO 2016 December Contest, Gold Problem 3. Lasers and Mirrors