Grandfather Dovlet’s calculator

题意翻译

给定 $l$，$r$，用上图的方式输出，一条黑色段的贡献为 $1$，求输出 $[l,r]$ 的整数有多少贡献。$1\le l\le r\le 10^6$。

题目描述

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](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 $ .

输入输出格式

输入格式

The only line contains two integers $ a,b $ ( $ 1<=a<=b<=10^{6} $ ) — the first and the last number typed by Max.

输出格式

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

输入输出样例

输入样例 #1

1 3

输出样例 #1

12

输入样例 #2

10 15

输出样例 #2

39