Programmer Sergey visited the homeland of football this summer. On his first
day in England, he discovered that there were more bookmakers near the Wembley
Stadium than football fans. The bookmakers were taking bets at a wide range of
payout odds. As a programmer, Sergey found it easier to operate with betting
coefficients instead of odds, and he easily converted odds into these coefficients:
if the odds for some outcome of a match are m : n, then the betting
coefficient k is (m + n) / n. This means that if Sergey placed a bet of x
pounds and guessed the outcome correctly, he is paid k · x pounds by the
bookmaker (and gets nothing if he was wrong).
Having walked around the stadium,
Sergey found out that the best coefficients for the three possible outcomes
were 3.5, 3.5, and 3.5 (of course, they were offered by different bookmakers).
Sergey placed a bet of 330 pounds on each outcome and was not a bit upset about
losing two of the three bets because the third bet brought him 1155 pounds,
which was more than he had paid to the three bookmakers altogether.
In order to cover his travel expenses, Sergey decided to place bets every day
distributing them in such a way that he would win as much as possible in the
worst case. Write a program that will help Sergey to place bets optimally.
You are given the best coefficients k_{1},
k_{2}, and k_{3} for the three possible
outcomes of a match. Find the maximal sum of money that Sergey will receive in
the worst case if the total amount of the bets he places is 1000 pounds.
Input
The single line of the input contains the numbers k_{1},
k_{2}, and k_{3} separated
by a space. The numbers are in the range from 0.01 to 100.
Output
In the single line of the output, give the maximal amount of money that Sergey
gets back in the worst case. You may assume that bets and payouts can be fractional
numbers. Round the answer to an integer according to the standard mathematical rule.
Samples
input  output 

3.5 3.5 3.5
 1167

1.25 10.0 5.75
 931

Problem Author: Sergey Pupyrev (prepared by Vladimir Yakovlev)
Problem Source: ACM ICPC 2007–2008. NEERC. Eastern Subregion. Yekaterinburg, October 27, 2007