a = int(input())
b = int(input())
c = int(input())
ans = False
for x in range(1, b + c - a):
    for y in range(1, b + c - a - x):
        if 2 * max(a + x + y, b, c) < a + x + y + b + c:
            l1 = (a + y) * b * b + x * c * c - x * (a + y) * (a + x + y)
            l2 = (a + x) * c * c + y * b * b - y * (a + x) * (a + x + y)
            if b * b * y * y * l1 == c * c * x * x * l2:
                ans = True
print('Yes' if ans else 'No')