#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  int pack[3] = {a, b, c};
  for (int i = 0; i < 3; i++) {
    for (int j = 0; j < 3 || j != i; j++) {
      if (j == i) continue;
      for (int k = 0; k < 3; k++) {
        if (k == i || k == j) continue;
        if (pack[i] + pack[j] == pack[k]) {
          puts("Yes");
          return 0;
        }
      }
    }
  }
  puts("No");
  return 0;
}
