



from decimal import Decimal

from decimal import *

a, b, c = list(map(str, input().split()))



getcontext().prec = 500



a = Decimal(a)

b = Decimal(b)

c = Decimal(c)



if a**Decimal("0.5")  + b**Decimal("0.5") < c**Decimal("0.5"):

    print("Yes")

else:

    print("No")





from decimal import Decimal

from decimal import *

a, b, c = list(map(str, input().split()))



#getcontext().prec = 1000



a = Decimal(a)

b = Decimal(b)

c = Decimal(c)



if a**Decimal("0.5")  + b**Decimal("0.5") < c**Decimal("0.5"):

    print("Yes")

else:

    print("No")

from decimal import Decimal
from decimal import *

a, b, c = list(map(str, input().split()))
getcontext().prec = 500
a = Decimal(a)
b = Decimal(b)
c = Decimal(c)
if a ** Decimal("0.5") + b ** Decimal("0.5") < c ** Decimal("0.5"):
    print("Yes")
else:
    print("No")

from decimal import Decimal
from decimal import *

a, b, c = list(map(str, input().split()))
# getcontext().prec = 1000
a = Decimal(a)
b = Decimal(b)
c = Decimal(c)
if a ** Decimal("0.5") + b ** Decimal("0.5") < c ** Decimal("0.5"):
    print("Yes")
else:
    print("No")

-getcontext().prec = 500 +# getcontext().prec = 1000