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