#include <bits/stdc++.h>
int main() {
  int a, b, c, check;
  scanf("%d %d %d", &a, &b, &c);
  if (a == b + c) check = 1;
  if (b == c + a) check = 1;
  if (c == a + b) check = 1;
  if (check == 1) {
    printf("Yes\n");
  } else {
    printf("No\n");
  }
  return 0;
}
