#include <bits/stdc++.h>
int main() {
  int a, b, c;
  scanf("%d%d%d", &a, &b, &c);
  int s1, s2, s3;
  s1 = a + b;
  s2 = a + c;
  s3 = b + c;
  if (s1 == s2 || s1 == s3 || s2 == s3)
    printf("Yes\n");
  else
    printf("No\n");
  return 0;
}
