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