Task: Program Execution
Input (English): 3, 20, ['p', '9453', '6043', '2525', '5311', '7563', 'h', '1257', 'A', 'y', 'U', '7773', '923', '7971', 'E', 'i', '8617', 'E', 'S', 'Y', '3541', '4169', 'G', 'w']
Output (English): YSE8617iE79719237773UyA1257h7563531125256043