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