Determining the type of triangle by its sides

TypeScript Easy types

Task «Determining the type of triangle by its sides»

Write a program that takes three integers representing the lengths of the sides of a triangle and determines its type: equilateral, isosceles, or scalene. If a triangle with these sides does not exist, output 'not a triangle'.

Input Format

Three integers separated by spaces or line breaks.

Output Format

String: 'equilateral', 'isosceles', 'scalene', or 'not a triangle'.

Examples

Example 1

INPUT

3 3 3

OUTPUT

равносторонний

Example 2

INPUT

3 4 3

OUTPUT

равнобедренный

Example 3

INPUT

3 4 5

OUTPUT

разносторонний

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