#include <bits/stdc++.h>
using namespace std;
int main(int argc, const char* argv[]) {
  vector<int> nums(3, 0);
  for (int i = 0; i < 3; i++) {
    scanf("%d", &nums[i]);
  }
  sort(nums.begin(), nums.end());
  printf("%s\n", (nums[0] == nums[1] + nums[2]) ? "Yes" : "No");
  return 0;
}
