240428

#6063n, m = input().split()#n = int(n)#m = int(m)#c = n if n>=m else m#print(int(c))#6064a, b, c = input().split()#a = int(a)#b = int(b)#c = int(c)#s = (a if a<b else b) if ((a if a<b else b)<c) else c#print(int(s))#6065a, b, c = input().split()#a = int(a)#b = int(b)#c = int(c)#if a%2==0:# print(a)#if b%2==0:# print(b)#if c % 2==0:# print(c)#if a%2==0 and a>0 :  #  print('hello')#elif 조건식 :#    if :#else :#6066a, b, c = input().split()#a = int(a)#b = int(b)#c = int(c)#if a%2==0:#    print("even")#else :#    print('odd')#if b%2==0:#    print("even")#else :#    print('odd')#if c%2==0:#    print("even")#else :#    print('odd')#6067a = input()#a = int(a)#if a<0:#    if a%2==0:#        print("A")#    else :#        print("B")#else:#    if a%2==0:#        print("C")#    else:#        print("D")#6068a = input()#a = int(a)#if a>=90:   # print("A")#elif a>=70:#    print("B")#elif a>=40:#    print("C")#elif a>=0:#    print("D")#6069a = input()#if a=='A': #   print("best!!!")#elif a=='B':#    print("good!!")#elif a=='C':#    print("run!")#elif a=='D':#    print("slowly~")#else:#    print("what?")#6070n = input()#n = int(n)#if n//3==1:#  print("spring")#elif n//3==2:#    print("summer")#elif n//3==3:#    print('fall')#else:#    print("winter")#1164a, b, c = input().split()#a = int(a)#b = int(b)#c = int(c)#if a<=170:#    print("CRASH")#elif b<=170:#    print("CRASH")#elif c<=170:#    print("CRASH")#else:#    print("PASS")#1166a = input()# a = int(a)# if a%400==0 or a%4==0 and a%100!=0:#    print("Leap")# else:#    print("Normal")#a, b = input().split()#a = int(a)#b = int(b)#if b>=30:#    print(a, b-30)#elif a!=0:#    print(a-1, b+30)#else:#    print(23, b+30)a, b, c = input().split()a = int(a)b = int(b)c = int(c)if a+b<=c:    print("Not")elif a==b==c:    print("Regular")elif a**2+b**2==c**2:    print("Right")elif a==b or b==c or a==c:    print("Isosceles")