Task: Program Execution
Input (English): 19, 21, ['y', '9403', 'C', '389', '5521', '9271', 'W', 'B', '3613', 'w', '2741', 'H', '8305', '727', '7641', '5857', '9183', '1297', 'p', '7371', 'b']
Output (English): 7371