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