#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  bool sameFlag = false;
  if (a + b == c) {
    sameFlag = true;
  } else if (b + c == a) {
    sameFlag = true;
  } else if (c + a == b) {
    sameFlag = true;
  }
  cout << (sameFlag == true ? "Yes" : "No") << endl;
}
