Task: Program Execution
Input (English): 1, 15, ['4313', 'z', '3227', '5871', '2969', 'b', 'y', '9371', '1565', '1551', 'a', 'E', 'W', 'o', '7949', 'Q', '9889', '4591', '7341']
Output (English): 9497oWEa155156511739yb969217857223z3134