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Xiaoming left home to take part in the Huajin Cup Mathematics Competition. Dad looked at the odometer of a car before driving and there were 20 palindromes.
Palindrome is a number that can be read in both positive and negative directions, with equal values, such as 12 1, and vice versa.

So; Push one by one;

1, 1 1, 22, 33, 44, 55, 66, 77, 88, 99, 10 1, 1 1 1, 12 1, 13 1, 14 1, 15 1,

16 1, 17 1, 18 1, 19 1 should be19/kloc-0.

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