Task: Program Execution
Input (English): 10, 15, ['X', '1445', 'f', '2065', 'c', '3987', 'n', 'A', 'h', 'O', 'U', 'j', 'F', 'A', 'R', '2901', 'Y', 'v', '4937', 'k', '6035', 'U', '8313', '5043', 'u']
Output (English): OUjFAR