# coding: utf-8
"""Fighting over Candies

@author: hijiri.n
@modified: 11-19-2016

"""


def solve():
    candies = list(map(int, input().split()))
    ach = sum(candies) // 2
    for c in candies:
        if c == ach:
            return "Yes"
    return "No"
 

print(solve_a())
