Grandfather Dovlet’s calculator

1000ms

262144K

Description:

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).

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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.

Input:

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

Output:

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

Sample Input:

1 3

Sample Output:

Sample Input:

10 15

Sample Output:

Informação

Provedor Codeforces

Código CF620B