#include <bits/stdc++.h>
int main() {
  int a, b, c;
  int max, min, mid;
  scanf("%d %d %d", &a, &b, &c);
  if (((a + b + c) % 2) != 0) {
    puts("No");
    return 0;
  }
  max = ((a) > (((b) > (c) ? (b) : (c))) ? (a) : (((b) > (c) ? (b) : (c))));
  min = ((a) < (((b) < (c) ? (b) : (c))) ? (a) : (((b) < (c) ? (b) : (c))));
  if (a != max && a != min) {
    mid = a;
  } else if (b != max && b != min) {
    mid = b;
  } else {
    mid = c;
  }
  if (max == (mid + min)) {
    puts("Yes");
  } else {
    puts("No");
  }
  return 0;
}
