#ガチの天才数学パズルじゃん、なんだこれ

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
    if b**2 * y * (a + y) == c**2 * x * (a + x):
      if b+z > c and c+z > b: print('Yes'); exit()
      
print('No')