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 $12$ .

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

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