Task: Program Execution
Input (English): 1, 20, ['g', '6591', '6071', '2781', '7031', '4993', '4613', '3075', 'K', '4037', '5', '2377', '6337', 'E', '7875', '481', '4123', '3811', 'f', 'I', '4899', 'D']
Output (English): If381141234817875E6337237754037K3075461349937031278160716591g