#include <bits/stdc++.h>
using namespace std;
int main() {
  int t = 0;
  for (int i = 0; i < 100000000000; i++) {
    t = t + t - t;
  }
  int a[3];
  for (int i = 0; i < 3; i++) {
    cin >> a[i];
  }
  sort(a, a + 3);
  if (a[0] + a[1] == a[2]) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}
