| Вход | Ожидаемый результат |
|---|---|
| [[[1, 5], [2, 6], [3, 7]]] | 3 |
| [[]] | 0 |
| [[[1, 2], [3, 4]]] | 1 |
| [[[1, 10], [2, 3], [4, 5], [6, 7]]] | 2 |
| [[[1, 5]]] | 1 |
| [[[1, 4], [2, 5], [3, 6], [4, 7]]] | 3 |
| [[[0, 100], [0, 100], [0, 100]]] | 3 |
| [[[1, 2], [2, 3]]] | 1 |
| [[[1, 3], [2, 4], [3, 5]]] | 2 |
| [[[1, 10], [2, 9], [3, 8], [4, 7], [5, 6]]] | 5 |