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