Allen Chou says to YSITD
所以 known = ['2.1.1.69', '2.1.1.69', '2.1.1.69', '2.1.1.69'] mips = ['1.1.1.70', '1.1.1.70', '1.1.1.70', '1.1.1.70', '1.1.1.73'......]