#include <bits/stdc++.h>
using namespace std;
const double PI = 3.14159265358979323846;
const double EPS = 1e-12;
const long long INF = 1LL << 29;
const long long mod = 1e9 + 7;
long long gcd(long long x, long long y) {
  if (x % y == 0) {
    return y;
  }
  return gcd(y, x % y);
}
int main() {
  long long a[3];
  cin >> a[0] >> a[1] >> a[2];
  long long average = (a[0] + a[1] + a[2]) / 2;
  for (long long(i) = (0); (i) < (3); ++i) {
    if (average == a[i]) {
      cout << "Yes" << endl;
      return 0;
    }
  }
  cout << "No" << endl;
  return 0;
}
