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Score : $100$ points

### Problem Statement

Serval, Fennec, and Raccoon played rock-paper-scissors and had a draw.

You are given characters $x$ and $y$ representing the hand thrown by Fennec and Raccoon, respectively. Here, 0 stands for rock, 1 stands for scissors, and 2 stands for paper.

Print the character corresponding to the hand thrown by Serval, which can be uniquely determined.

### Constraints

• Each of $x$ and $y$ is 0, 1, or 2.

### Input

Input is given from Standard Input in the following format:

$x$ $y$


### Output

Print the answer, which should be 0 for rock, 1 for scissors, or 2 for paper.

### Sample Input 1

0 1


### Sample Output 1

2


Fennec threw rock, and Raccoon threw scissors. To have a draw, Serval must have thrown paper.

### Sample Input 2

0 0


### Sample Output 2

0


Fennec threw rock, and Raccoon threw rock. To have a draw, Serval must have thrown rock.