Problems
City numbers
City numbers
Determine if the houses with numbers n and m are located on one side of the street.
Input data
Two numbers n and m (1 ≤ n, m ≤ 100).
Output data
Print 1 if the houses with numbers n and m are located on one side of the street and 0 otherwise.
Examples
Input example #1
1 2
Output example #1
0