Task: Program Execution
Input (English): 6, 8, ['7051', '4979', 'y', 'c', '8079', 'W', 't', '9575', 'O', 'B', '7143', 's', '4471', '2171', '7285', '3969', '5561', 'v', '9527', '9399', 'S']
Output (English): Wt9575