Compare Integers

Background

Congcong is learning about conditional statements and needs your help to solve an interesting problem.

Problem Description

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

Input Format

Input is given from standard input in the following format.

Two integers $a$ and $b$.

Output Format

Output is printed to standard output in the following format.

An integer representing the result calculated according to the rules.

Sample

2 3

3

6 2

6

3 2

3

Sample Explanation

Sample $1$: The remainders of $2$ and $3$ when divided by $5$ are $2$ and $3$ respectively, which are not the same. Return the larger value, $3$. Sample $2$: The remainders of $6$ and $2$ when divided by $5$ are $1$ and $2$ respectively, which are not the same. Return the larger value, $6$. Sample $3$: The remainders of $3$ and $2$ when divided by $5$ are $3$ and $2$ respectively, which are not the same. Return the larger value, $3$.

Constraints

Time limit for each test case is $1$ second, and memory limit is $1024$ KiB.