Task: Program Execution
Input (English): 4, 19, ['7853', '2575', 'C', 'n', '6487', 't', 'R', '6999', '5505', '1679', 'F', 'S', '165', '5311', '1625', '2069', 'k', '2141', '1999', '6975', '1859', '4187']
Output (English): 99911412k960252611135561SF976150559996Rt7846n