Task: Program Execution
Input (English): 5, 15, ['f', 'y', '2695', 'a', 'O', '2141', 'g', 'g', '223', '6857', 'd', 'h', '1669', 'D', '9171', 'C', '4879', '7267', '8195', '6781', '1597']
Output (English): O2141gg2236857dh1669D9171