Construct or analyze an L-shaped pattern on a grid using simple grid logic.
You are given a rectangular grid. The task is to determine or construct an arrangement that forms an L shape according to the problem’s rules, using grid cells as the basic unit.
Typically, problems of this style ask you to reason about positions on a matrix, mark cells that belong to the shape, and ensure the shape satisfies constraints such as size, placement, or coverage.
Your solution should use straightforward grid reasoning and careful handling of boundaries.
Input Format
- The input describes a grid-related instance.
- Read the dimensions and the parameters needed to define the L shape.
- Interpret the remaining values according to the grid specification.
Output Format
- Output the required result for the grid problem.
- This is usually either a count, a valid construction, or a yes/no style answer.
Constraints
- Use only the information provided by the input.
- Handle boundary conditions carefully.
- A linear or near-linear scan over the grid is usually sufficient.
Example 1
Input
3 3 1 1
Output
Yes
Explanation
A tiny illustrative example: the specified location can be treated as a valid corner for an L-shaped arrangement under simple grid rules.
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