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Reconcile noisy annotator labels

Three annotators label each item and report an integer confidence. Produce the final label by weighted vote and count the items where every annotator agreed.

Practice focus- The first line is the item count n . Each of the next n lines has exactly three <label :<confidence pairs, where the label is A or B and the confidence is a nonnegative integer. - Sum the confidence per label. Return A when its total is higher, B when its total is higher, and ABSTAIN on an exact tie. - After the per-item labels, return one final line agreed=<count , where an item is agreed only when all three raw labels match. - Return one label per item in input order, then the agreement line. Do not append a trailing newline.