Task: Program Execution
Input (English): 13, 21, ['S', 'R', '5697', '5691', 'M', '3289', 'k', '1397', '4687', '2621', 'J', '6815', '4483', '2645', '5679', '4053', '1681', 'g', 'L', '1171', 'B']
Output (English): B1711Lg18613504976554623844