Task: Program Execution
Input (English): 10, 11, ['1645', 'E', 'n', 'C', '7599', '9847', 'X', 'B', 'L', 'p', 'E', 'M', '2025', 'j', 'p', 'y', 'z', 'p', '6569', 'u']
Output (English): Ep