CF620B.Grandfather Dovlet’s calculator

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.org/wiki/Seven-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.

有一次，马克在祖父多夫列特的箱子中发现了一个电子计算器。他注意到数字是用七段数码管显示的（https://en.wikipedia.org/wiki/Seven-segment_display）。

马克开始依次输入从 $a$ 到 $b$ 的所有整数。每输入一个数字后，马克都会将计算器清零。求计算器总共点亮的段数。

例如，若 $a = 1$ 且 $b = 3$，则计算器首先显示 $1$，点亮 $2$ 段；接着显示 $2$，点亮 $5$ 段；最后显示 $3$，点亮 $5$ 段。因此，总共点亮的段数为 $12$。

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

唯一一行包含两个整数 $a$ 和 $b$（$1 \leq a \leq b \leq 10^6$）——分别为 Max 输入的第一个数和最后一个数。

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

输出唯一的整数 $a$ —— 打印出的线段总数。