Task: Program Execution
Input (English): 15, 21, ['b', 'W', '5091', 'U', 'k', '5251', '4907', 'p', 'W', 'k', 'g', 'g', 'v', '2947', 'o', 't', 'w', 'z', '1909', '2075', 'O', '2323', 'N', 'S']
Output (English): 3984