#include <bits/stdc++.h>
int main() {
  int a, b, c;
  int result;
  scanf("%d %d %d", &a, &b, &c);
  if (a == b + c) {
    result = 1;
  } else if (b == a + c) {
    result = 1;
  } else if (c == a + b) {
    result = 1;
  } else {
    result = 0;
  }
  if (result == 0) {
    printf("Yes");
  } else {
    printf("%No");
  }
  return 0;
}
