Problems

# City numbers

# City numbers

Determine if the houses with numbers **n** and **m** are located on one side of the street.

#### Input

Two numbers **n** and **m** (**1** ≤ **n**, **m** ≤ **100**).

#### Output

Print **1** if the houses with numbers **n** and **m** are located on one side of the street and **0** otherwise.

Input example #1

1 2

Output example #1

0