Task: Program Execution
Input (English): 2, 4, ['x', '2517', '617', '3373', 'X', '8583', 'n', '763', '6339', '1129', 'r', 'K', 'l', '9685', '1855', 'F', '5585', '8427', '9129']
Output (English): 2517, 617, 3373