Task: Program Execution
Input (English): 10, 18, ['7909', 'b', '6257', 'C', '9331', 'N', '6225', 'R', '9929', 'a', 'I', '1673', 'H', '4233', '9513', '8791', '6953', 'u', 'Z', 'E', 'd', 'J', 'J']
Output (English): u3596197831593324H3761Ia