#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using p = pair<int, int>;
using Graph = vector<vector<int>>;
int dx[4]{-1, 0, 1, 0};
int dy[4]{0, 1, 0, -1};
int main() {
  int a, b, c;
  cin >> a, b, c;
  int d = min(a, min(b, c));
  int e = max(a, max(b, c));
  if (e - d == a || e - d == b || e - d == c) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
  return 0;
}
