#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  bool flag = false;
  if (a == b + c) {
    flag = true;
  } else if (a + b == c) {
    flag = true;
  } else if (a + c == b) {
    flag = true;
  }
  if (flag)
    cout << "Yes";
  else
    cout << "No";
  return 0;
}
