Angles

Time Limit: 1 sec

 

The Problem

In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

 

Types of angle

1. Angles smaller than a right angle (less than 90°) are called acute angles ("acute" meaning "sharp").

2. An angle equal to 1/4 turn (90° or π/2 radians) is called a right angle.

3. Angles larger than a right angle and smaller than a straight angle (between 90° and 180°) are called obtuse angle ("obtuse" meaning "blunt").

 

Make a simple program that reads one integer number A denoted the value of an angle in degree. You need to determind the type of angle.

 

The Input

Input file contain a series of line, each line contain one integer number A(0<A<180). Input is terminated by EOF.

 

The Output

For each line of input, print "ACUTE ANGLE" if the angle is acute angle, or print "RIGHT ANGLE" if the angle is right angle, or print "OBTUSE ANGLE" if the angle is obtuse angle in a separate line.

 

Sample Input

60

90

120

 

Sample Output

ACUTE ANGLE

RIGHT ANGLE

OBTUSE ANGLE

 

 

 

 

Problem Setter: Shahin ShamS