Giga Tower is the tallest and deepest building in Cyberland. There are 17 777 777 777 floors, numbered from - 8 888 888 888 to 8 888 888 888. In particular, there is floor 0 between floor - 1 and floor 1. Every day, thousands of tourists come to this place to enjoy the wonderful view. In Cyberland, it is believed that the number "8" is a lucky number (that's why Giga Tower has 8 888 888 888 floors above the ground), and, an integer is lucky, if and only if its decimal notation contains at least one digit "8". For example, 8, - 180, 808 are all lucky while 42, - 10 are not. In the Giga Tower, if you write code at a floor with lucky floor number, good luck will always be with you (Well, this round is #278, also lucky, huh?). Tourist Henry goes to the tower to seek good luck. Now he is at the floor numbered a . He wants to find the minimum positive integer b , such that, if he walks b floors higher, he will arrive at a floor with a lucky number.

输入描述:

The only line of input contains an integer a ( - 109 ≤ a ≤ 109).

输出描述:

Print the minimum b in a line.

备注:

For the first sample, he has to arrive at the floor numbered 180.For the second sample, he will arrive at 8.Note that b should be positive, so the answer for the third sample is 10, not 0.