#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  string ans = "No";
  if (a - b - c == 0) {
    ans = "Yes";
  } else if (b - c - a == 0) {
    ans == "Yes";
  } else if (c - a - b == 0) {
    ans == "Yes";
  }
  cout << ans << endl;
}
