a, b, c = input().split() a, b, c =int(a),int(b),int(c) if a + b <= c or a + c <= b or b + c <= a: print('NO') else: if a == b == c: print('Equilateral Triangle') elif a**2 + b**2 == c**2 or b**2 + c**2 == a**2 or c**2 + a**2 == b**2: print('Right Triangle') elif a == b or a == c or b == c: print('Isosceles Triangle') else: print('Simple Triangle')