Task: Program Execution
Input (English): 10, 13, ['9509', '487', '2049', '1119', '9375', 'C', '7985', '5657', '3337', 'A', '4459', 'X', '3003', 'B', '6817', '8851', 'a', 'h']
Output (English): 3003X4459A