angle1 = input () angle2 = input () angle2 = input ()

angle1 = int (angle1) angle2 = int (angle2) angle3 = int (angle3)

if angle1 == 60 and angle2 == 60 and angle3 == 60: print ("Equilateral") else (angle1 + angle2 + angle3 == 180) and angle1 == angle2 and angle1 == angle3 and angle2 == angle3: print("Isosceles") else angle1 + angle2 + angle3 == 180: print("Scalene") else: print("Error")