Task: Program Execution
Input (English): 15, 20, ['3179', '7807', '6989', 'Q', '2889', '2559', '5233', '1945', '8341', '2929', '2065', 'M', 'u', '4793', 'j', 'b', 'l', 'T', '1065', '2481', 'i', 'W']
Output (English): 24811065Tlbj