Once Max found an electronic calculator from his grandfather Dovlet's chest. He noticed that the numbers were written with seven-segment indicators (https:en.wikipedia.orgwikiSeven-segment_display). Max starts to type all the values from a to b . After typing each number Max resets the calculator. Find the total number of segments printed on the calculator. For example if a = 1 and b = 3 then at first the calculator will print 2 segments, then — 5 segments and at last it will print 5 segments. So the total number of printed segments is 12.

输入描述:

The only line contains two integers a, b (1 ≤ a ≤ b ≤ 106) — the first and the last number typed by Max.

输出描述:

Print the only integer a — the total number of printed segments.