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You are solving a spreadsheet benchmark task in a real workbook. Objective: Produce the correct final workbook state for the expected answer region. What matters: - Only the values in the expected answer region will be graded. - The workbook is the answer. Instructions: 1. Read the workbook and inspect the relevant data region first. 2. Infer the required result for the provided workbook instance. 3. Write the final value(s) directly into the expected answer region. 4. Do not rely on prose, formulas in your chat response, pseudocode, or VBA as the answer unless the benchmark explicitly requires those to be written into cells. 5. If the natural-language task asks for a general method, formula, or macro, convert that into the concrete result needed for this workbook instance. 6. Keep your final text response short and only summarize the workbook cells you changed. Relevant data region(s): Expected answer region(s): 'Total'!O5:Z12 Expected answer sheet(s): Task: Use the COUNTIFS formula, or possibly another formula, to calculate the full-year attendance for each individual from January to December in an Excel Staff Attendance Sheet, by setting the criteria to a specific person's name from a dropdown list in cell 'O3'in the 'Total' sheet. Each monthly sheet has two rows for each person that represent the first and second half of their workday. Initially, I considered using COUNTIFS with the criteria based on the person's name in 'O3' and the months from 'M5' to 'M12'. After receiving a response, I realized I had overlooked that each person has two rows for attendance tracking—one for the first half and one for the second half of the workday—which should affect the calculation of working days and absences.