PROBLEM LINKS

Practice
Contest

DIFFICULTY

EASY

EXPLANATION

This is the easiest problem in the set. This problem can be solved various methods. For instance, if A - B mod 10 = 9, print A - B - 1, otherwise print A - B + 1. Be careful not to print 0 if A - B = 1. Your answer must be a positive integer.

SETTER'S SOLUTION

Can be found here.

TESTER'S SOLUTION

Can be found here.