#include <bits/stdc++.h>
using namespace std;
int main() {
  array<int, 3> x;
  int max = 0;
  int sum = 0;
  for (int i = 0; i < 3; i++) {
    cin >> x[i];
    if (max < x[i]) {
      max = i;
    }
  }
  switch (max) {
    case 0:
      sum = x[1] + x[2];
      break;
    case 1:
      sum = x[0] + x[2];
      break;
    case 2:
      sum = x[0] + x[1];
      break;
    default:
      cout << "error" << endl;
  }
  if (sum == x[max])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
