import math
a,b,c = [int(input()) for _ in range(3)]
for z in range(2+a,b+c):
  for x in range(1,z+1):
    y = z-a-x
    if y < 1: continue
    sqR = b**2 + x**2 - (b**2 + z**2 - c**2) * x / z
    sqS = c**2 + y**2 - (c**2 + z**2 - b**2) * y / z
    R,S = math.sqrt(sqR), math.sqrt(sqS)
    if abs((b**2 + sqR - x**2) * 2 * c * S - (c**2 + sqS - y**2) * 2 * b * R ) < 1e-6:
      if b+z > c and c+z > b: print('Yes'); exit()
      
print('No')