What is wrong in bash code?

Question

bash

Define a triangle. What's wrong? :(

#!/bin/bash
read a
read b
read c
if [ $(($a + $b)) -le $c ] || [ $(($a + $c)) -le $b ] || [ $(($b + $c)) -le $a ]
then
echo "ERROR"
elif [ $a -ne $b ] $$ [ $a -ne $c ] $$ [ $b -ne $c ]
then
echo "SCALENE"
elif [ $a -eq $b ] $$ [ $b -eq $c ]
then
echo "EQUILATERAL"
else
echo "ISOSCELES"
fi
fi
fi

Answer 1

In addition to extra fi instead of $$, it probably meant &&

Answer 2

$$replace with &&.

Answer 3

Without delving into the problem and the solution, at least in the fact that there are two extra fi.