#!/usr/bin/env python3

from decimal import *

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



if a+b>c:

    print('No')

    exit()



X = (a+b-c)**2

Y = a*b*4

if (Y<X):

    print('Yes')

else:

    print('No')

#!/usr/bin/env python3



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



if a+b>c:

    print('No')

    exit()





f1 = 4*a*b - 2*a*b + 2*c*a + 2*b*c

f2 = c**2 + b**2 + a**2



if f1 < f2:

    print('Yes')

else:

    print('No')

#!/usr/bin/env python3
from decimal import *

a, b, c = list(map(int, input().split()))
if a + b > c:
    print("No")
    exit()
X = (a + b - c) ** 2
Y = a * b * 4
if Y < X:
    print("Yes")
else:
    print("No")

#!/usr/bin/env python3
a, b, c = list(map(int, input().split()))
if a + b > c:
    print("No")
    exit()
f1 = 4 * a * b - 2 * a * b + 2 * c * a + 2 * b * c
f2 = c**2 + b**2 + a**2
if f1 < f2:
    print("Yes")
else:
    print("No")

-from decimal import * - -X = (a + b - c) ** 2 -Y = a * b * 4 -if Y < X: +f1 = 4 * a * b - 2 * a * b + 2 * c * a + 2 * b * c +f2 = c**2 + b**2 + a**2 +if f1 < f2: