Task: Program Execution
Input (English): 7, 10, ['3693', 's', '8431', 'l', '4673', 'S', 'a', 'b', 'B', 'H', '3659', 'O', 'I', 'X', '3171', '4729', '9029', '4763', '691', '419', '4369', 'C', 'P', '8863', '3147', 'm', '1873', '5071', 'n']
Output (English): HBba