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