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