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