def canDiv(a,b,c):
    s = (a+b+c) 
    if a * 2 == s:
        return True
    if b * 2 == s:
        return True
    if c * 2 == s:
        return True
    return False

def main():
    a,b,c = map(int,raw_input().split())
    res = canDiv(a,b,c)
    if res == True:
        print "Yes"
    else:
        print "No"

if __name__ == '__main__':
    main()