Task: Program Execution
Input (English): 4, 16, ['339', '1747', '197', '2735', '3771', 'I', 'x', '3731', '1289', '1475', '6181', '6177', 'B', 'r', 'Q', '7121', '7855', '7455', '1087', 'D', 'B']
Output (English): 1217QrB77161816574198211373xI17735372