#include <bits/stdc++.h>
using namespace std;
int main(int argc, const char* argv[]) {
  int a, b, c;
  cin >> a >> b >> c;
  if (a > c && a > b) {
    if (a == c + b) {
      cout << "Yes";
    } else {
      cout << "No";
    }
  }
  if (b > c && b > a) {
    if (b == a + c) {
      cout << "Yes";
    } else {
      cout << "No";
    }
  }
  if (c > a && c > b) {
    if (c == b + a) {
      cout << "Yes";
    } else {
      cout << "No";
    }
  }
  return 0;
}
