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