Dividend

Time Limit: 1 sec

 

The Problem

In a division problem, the divisor is D, the quotient is Q and the remainder is one-third of the divisor. What is the dividend ?

 

Example:

if D = 3 and Q = 5 then

Dividend is 16

 

 

The Input

The input file contains only 2 integer numbers D, and Q (D<=4000, Q<100).

 

The Output

Output will show the one integer numbers in a separate line.

 

Sample Input

3 5

 

Sample Output

16

 

 

 

 

Problem Setter: Shahin ShamS