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