feat(content): function signatures + test cases

backend/data/questions/cells-with-odd-values-in-a-matrix.yaml

@@ -9,6 +9,26 @@ categories:
 patterns:
   - prefix-sum
 
+function_signature: "def odd_cells(m: int, n: int, indices: list[list[int]]) -> int:"
+
+test_cases:
+  visible:
+    - input: { m: 2, n: 3, indices: [[0, 1], [1, 1]] }
+      expected: 6
+    - input: { m: 2, n: 2, indices: [[1, 1], [0, 0]] }
+      expected: 0
+  hidden:
+    - input: { m: 1, n: 1, indices: [[0, 0]] }
+      expected: 1
+    - input: { m: 3, n: 3, indices: [[0, 0], [1, 1], [2, 2]] }
+      expected: 0
+    - input: { m: 2, n: 2, indices: [[0, 0]] }
+      expected: 3
+    - input: { m: 5, n: 5, indices: [[0, 0], [0, 1], [0, 2]] }
+      expected: 20
+    - input: { m: 3, n: 4, indices: [[0, 0], [1, 1], [0, 1]] }
+      expected: 6
+
 description: |
   There is an `m x n` matrix that is initialised to all `0`'s. There is also a 2D array `indices` where each `indices[i] = [r_i, c_i]` represents a **0-indexed location** to perform some increment operations on the matrix.