Task: Program Execution
Input (English): 6, 7, ['5679', 'q', '4795', '2739', '3023', '9503', 'S', '8629', 'a', 'n', '4507', 'n', 'J', 'T', '2145', 'x', 'R', 'm', 'g', 'P', '3731', '6443', 'r']
Output (English): S3059