Task: Program Execution
Input (English): 10, 18, ['5493', 'N', '3583', '1635', '3941', '4063', '4481', 'Q', 'Y', 'X', 'r', 'L', 'v', 'W', 'w', '8911', 'a', '269', '5597', '2425', '6451', 'A', 'z']
Output (English): XrLvWw8911a269