import sys
a=int(input())
b=int(input())
c=int(input())
for i in range(1,b+c-a):
  for j in range(1,b+c-a-i):
    if i*(a+i)*c**2==b**2*j*(a+j) and abs(b-c)<i+j+a and i+j+a<b+c:
      print("Yes")
      sys.exit()
print("No")