Task
Time limit: 1000 ms,
Memory limit: 256 Mb

Write a program that simulates the operation of the next machine. The machine receives a three-digit number at the input and builds a new number as follows:
1) the sums of the first and second digits are calculated, then the second and third digits;
2) these amounts are recorded in non-increasing order.
For example, for the number 639 we get the sums: 6 + 3 = 9; 3 + 9 = 12. Result: 129
Write a program that implements the work of this machine

Input: one number is input to the program n \((100<=n <=999)\)
Output: need to output a new number

Example
Input
654
Output
119