Task: Program Execution
Input (English): 14, 15, ['Q', '2131', 'X', 'u', 'y', '9699', '7305', '3017', '8151', 'X', '9723', '7907', 'j', '1527', 'u', 'D', 'b', '7735', '1713']
Output (English): 1527