#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  int ans = 0;
  cin >> a >> b >> c;
  if (a + b == c || a + c == b || b + c == a) {
    ans = 1;
  }
  if (ans == 1) {
    cout << "Yes" << endl;
  } else if (ans == 0) {
    cout << "No" << endl;
  }
  return 0;
}
