After first operation, student of \(1^{st}\) school with roll number 1, will stand in the front of the queue as the queue is empty initially.

In the image the student is represented by \((x, y)\), which means that student is in x school and his roll number is y, and rightmost cell is the front of the queue.

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After second operation, student of \(2^{nd}\) school with roll number 1, will stand behind the first student as there is no other member of the same in the queue.

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After third operation, student of \(1^{st}\) school with roll number 2, will stand behind the member of his school in the queue.

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After fourth operation, the student in the front will put his name in the Goblet of Fire and move out of the queue.

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After fifth operation, the student in the front will put his name in the Goblet of Fire and move out of the queue.

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