L = list(map(int, input().split()))
x = int(input())

L.sort()
for bit in range(3**3):
    P = []
    bitc = bit
    for i in range(3):
        if bitc % 3 == 0:
            P.append(0)
        elif bitc % 3 == 1:
            P.append(1)
        else:
            P.append(-1)
        bitc //= 3
    res = 0
    for i in range(3):
        res += P[i] * L[i]
    if abs(res) == x:
        print("Yes")
        exit()
print("No")