a=int(input()) b=int(input()) c=int(input()) 0<=a,b,c<=1e5 if a+b<=c or a+c<=b or c+b<=a: print("NO") else: if a==b==c: print("Equilateral Triangle") elif a==b or b==c or a==c: print("Isosceles Triangle") elif a*a+b*b==c*c or b*b+c*c==a*a or a*a+c*c==b*b: print("Right Triangle") else: print("Simple Triangle")