Problem Description

Given the Chinese, Math, and English scores of a student, determine if he has exactly one subject failing (score less than 60 points). If the student has exactly one failing score, output 1; otherwise, output 0.

Input Format

A single line containing three integers between 0 and 100, representing the student's scores in Chinese, Math, and English, respectively.

Output Format

Output 1 if the student has exactly one failing score, otherwise output 0.

Sample Input and Output

Sample Input #1

59 60 61

Sample Output #1

1

Sample Input #2

59 50 59

Sample Output #2

0

Sample Input #3

100 100 90

Sample Output #3

0

见题面 Input 部分

见题面 Output 部分