#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int a, b, c;
  cin >> a >> b >> c;
  if (a > b && a > c) {
    if (a == b + c) {
      cout << "Yes" << endl;
    }
    if (a > b + c) {
      cout << "No" << endl;
    }
  }
  if (c > b && c > a) {
    if (c == b + a) {
      cout << "Yes" << endl;
    }
    if (c > b + a) {
      cout << "No" << endl;
    }
  }
  if (b > c && b > a) {
    if (b == a + c) {
      cout << "Yes" << endl;
    }
    if (b > a + c) {
      cout << "No" << endl;
    }
  }
  if (a == b && b == c) {
    cout << "No" << endl;
  }
}
