Background

Description

Given two int values, return whichever value is larger. However if the two values have the same remainder when divided by 5, then the return the smaller value. However, in all cases, if the two values are the same, return 0. Note: the % "mod" operator computes the remainder, e.g. 7 % 5 is 2.

Format

Input

Output

Samples

2 3

3

6 2

6

3 2

3

Limitation

1s, 1024KiB for each test case.