Task: Program Execution
Input (English): 17, 20, ['7353', '9605', 'y', '9607', '4411', '9791', '3351', 'X', '2733', 'd', '3815', 'O', 'l', 't', 'B', '2261', 'W', '1017', '4863', '415', '9209']
Output (English): W10174863415