#include <bits/stdc++.h>
using namespace std;
int main() {
  int i, j, k, n, m, l, f;
  cin >> i >> j >> k;
  if (i + j == k) f = 1;
  if (i + k == j) f = 1;
  if (k + j == i) f = 1;
  if (f == 1)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}
