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