Task: Program Execution
Input (English): 1, ['x', '4541', '6415', '5241', '5207', '6287', 's', '85', '1685', '1753', '8977', '8939', 'S', '6493', '4179', '447', 'p', '9889', '7137', '7013', 'B', '4773', 'A']
Output (English): x