Problems
Five
Five
Find the number of positive integers from l to r (inclusive) which do not contain the digit 5 in their entry.
Input
Two numbers l and r (1 ≤ l ≤ r ≤ 105
).
Output
Print the amount of required numbers.
Input example #1
3 10
Output example #1
7
Input example #2
1 100
Output example #2
81