feat(content): hidden test cases

backend/data/questions/booking-concert-tickets-in-groups.yaml

@@ -9,6 +9,28 @@ categories:
 patterns:
   - binary-search
 
+function_signature: "class BookMyShow"
+
+test_cases:
+  visible:
+    - input:
+        operations: ["BookMyShow", "gather", "gather", "scatter", "scatter"]
+        args: [[2, 5], [4, 0], [2, 0], [5, 1], [5, 1]]
+      expected: [null, [0, 0], [], true, false]
+  hidden:
+    - input:
+        operations: ["BookMyShow", "gather", "scatter"]
+        args: [[1, 5], [5, 0], [1, 0]]
+      expected: [null, [0, 0], false]
+    - input:
+        operations: ["BookMyShow", "scatter", "scatter", "gather"]
+        args: [[2, 3], [3, 1], [3, 1], [2, 1]]
+      expected: [null, true, true, []]
+    - input:
+        operations: ["BookMyShow", "gather", "gather", "gather"]
+        args: [[3, 4], [2, 0], [2, 1], [2, 2]]
+      expected: [null, [0, 0], [0, 2], [1, 0]]
+
 description: |
   A concert hall has `n` rows numbered from `0` to `n - 1`, each with `m` seats, numbered from `0` to `m - 1`. You need to design a ticketing system that can allocate seats in the following cases: