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