a = int(input())
b = int(input())
c = int(input())

for i in range(1, b + c - a):
    for j in range(1, b + c - a - i):
        if i * (a + i) * c**2 == b**2 * j * (a + j) and abs(b - c) < i + j + a:
            print("Yes")
            exit()
print("No")