import math

a, b, c=int(input()), int(input()), int(input())
di=b+c-a
err=10**(-7)
flag=False

for i in range(2, di):
  par=i-1
  for j in range(par):
    AB, AC, BD, DE, EC=b, c, 1+j, a, i-j-1
    BC, BE, DC=BD+DE+EC, BD+DE, DE+EC
    AD=math.sqrt((AB**2*DC+AC**2*BD-BC*BD*DC)/(BC))
    AE=math.sqrt((AB**2*EC+AC**2*BE-BC*BE*EC)/(BC))
    # cos_BAD=(AB**2+AD**2-BD**2)/(2*AB*AD)
    # cos_EAC=(AE**2+AC**2-EC**2)/(2*AE*AC)
    judge1=AE*AC*(AB**2+AD**2-BD**2)
    judge2=AB*AD*(AE**2+AC**2-EC**2)
    if abs(judge1-judge2)<=err and flag:
      print("Yes")
      flag=False

arr=[0]
if 3<=c and c<=5:
  x=arr[1]

if flag:
  print("No")