#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, x, y;
  cin >> a >> b >> c;
  x = a;
  y = b + c;
  if (y == x) cout << "Yes";
  x = b;
  y = a + c;
  if (x == y) cout << "Yes";
  x = c;
  y = a + b;
  if (x == y)
    cout << "Yes";
  else
    cout << "No";
  return 0;
}
