#!/bin/bash

read x
read y
read z
if (( $x == $y )) && (( $x == $z ));
then
    echo "EQUILATERAL"
elif (( $x == $y )) || (( $x == $z )) || (( $y == $z ));
then
    echo "ISOSCELES"
else
    echo "SCALENE"
fi