#include <bits/stdc++.h>
using namespace std;
long long gcd(long long a, long long b) {
  if (a < b) gcd(b, a);
  if (b == 0) return a;
  long long r;
  while ((r = a % b)) {
    a = b;
    b = r;
  }
  return b;
}
const long long INF = (1ll << 60);
const long long MOD = (long long)1e9 + 7;
signed main() {
  long long a, b, c;
  cin >> a >> b >> c;
  bool f = false;
  if (a == c)
    f = true;
  else if (b == c)
    f = true;
  else if (a + b == c)
    f = true;
  if (f)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}
