#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  scanf("%d %d %d", &a, &b, &c);
  int sum = a + b + c;
  sum /= 2;
  if (sum == a || sum == b || sum == c)
    printf("Yes\n");
  else
    printf("No\n");
  return 0;
}
