Task: Program Execution
Input (English): 9, ['2105', '7261', 'f', 'c', 'r', 'W', 'U', 'C', 'U', 'J', '4485', '3069', 'S', 'l', 'k', '7911', '163', 'n', '1909', '1739', '7615']
Output (English): 2105, J, 1909