from decimal import Decimal
de,ab,ac = int(input()),int(input()),int(input())
de2,ab2,ac2 = Decimal(de**2),Decimal(ab**2),Decimal(ac**2)
f = False
for bd in range(1,ab+ac-de):
    for ec in range(1,ab+ac-de-bd):
        bc = bd+de+ec; bd2,ec2,bc2 = Decimal(bd**2),Decimal(ec**2),Decimal(bc**2) 
        ad = (ab2+bd2-(ab2+bc2-ac2)*Decimal(bd)/Decimal(bc))**Decimal("0.5")
        ae = (ac2+ec2-(ac2+bc2-ab2)*Decimal(ec)/Decimal(bc))**Decimal("0.5")
        if (ab2+ad*ad-bd2)*ac*ae==(ac2+ae*ae-ec2)*ab*ad: f = True
print("Yes" if f else "No")