In many table-top games it is common to use different dice to simulate random events. A d or D is used to indicate a die with a specific number of faces, d4 indicating a four-sided die, for example. If several dice of the same type are to be rolled, this is indicated by a leading number specifying the number of dice. Hence, 2d6 means the player should roll two six-sided dice and sum the result face values.

Write a program to compute the most likely outcomes for the sum of two dice rolls. Assume each die has numbered faces starting at $1$ and that each face has equal roll probability.

Input

The input consists of a single line with two integer numbers, $n$, $m$, specifying the number of faces of the two dice.

Output

A line with the most likely outcome for the sum; in case of several outcomes with the same probability, they must be listed from lowest to highest value in separate lines.

Constraints

• $4 \le n, m \le 20$

Examples

Input:

6 6

Output:

7

Input:

6 4

Output:

5
6
7