#include <bits/stdc++.h>
using namespace std;
inline int in() {
  int x;
  scanf("%d", &x);
  return x;
}
const long long int LINF = 1001002003004005006ll;
const int INF = 1001001001;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  int num = (a + b + c) / 2;
  if (num == a || num == b || num == c) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
  return 0;
}
