The operation performed on the queue are:
enqueue(5); enqueue(7);enqueue(9);enqueue(11); dequeue(); x=dequeue(); dequeue(); enqueue(13); enqueue(15); enqueue(17); enqueue(19); dequeue(); dequeue(); y=dequeue(); z=dequeue(); dequeue();
What will be the result of x+y-z expression?
1
7
2
3
3
5
4
-3
5
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