Consider the sequence of all positive integers from a to b. Sort the digits of each number in increasing order. Find the sum of obtained numbers.
Two positive integers a and b (a≤b≤106).
Print the sum of obtained numbers.
Let a=19,b=22. The numbers from a to b are: 19,20,21,22. After sorting the digits in these numbers we get: 19,02,12,22. Their sum equals to 19+2+12+22=55.