The result format is in the following example.

Examples

Example 1:

Input:
students table:
+------------+------------------+------------------+
| student_id | name             | major            |
+------------+------------------+------------------+
| 1          | Alice            | Computer Science |
| 2          | Bob              | Computer Science |
| 3          | Charlie          | Mathematics      |
| 4          | David            | Mathematics      |
+------------+------------------+------------------+
courses table:

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