Description

Given a student's Chinese and Math scores, determine whether the student has exactly one failing grade (a score less than 60). If the student has exactly one failing grade, output 1; otherwise, output 0.

Input Format

A single line containing two integers between 0 and 100, representing the student's Chinese and Math scores.

Output Format

If the student has exactly one failing grade, output 1; otherwise, output 0.

Sample

50 80

1