Description

Given a student's Chinese and Math scores, determine whether exactly one of the courses is failed (score below 60).
If the student has exactly one failed course, output 1; otherwise, output 0.

Input Format

One line containing two integers between 0 and 100, representing the student's Chinese score and Math score, respectively.

Output Format

If the student has exactly one failed course, output 1; otherwise, output 0.

Example Input 1:

50 80

Example Output 1:

1

Example Input 2:

70 90

Example Output 2:

0

Example Input 3:

40 55

Example Output 3:

0

50 80

1