Task: Program Execution
Input (English): 1, ['D', 'S', 's', '7965', 'Y', 'Q', '2907', '1909', 'Z', '2641', 'j', '2091', 's', '323', '9719', '8139', '3751', 'o', '8119', '3881', '7811']
Output (English): D