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