#include <bits/stdc++.h>
int main(int argc, char *argv[]) {
  if (argc == 3) {
    int i;
    int num[3];
    for (i = 0; i < 3; i++) {
      num[i] = atoi(argv[i]);
    }
    if (num[0] + num[1] == num[2] || num[1] + num[2] == num[0] ||
        num[2] + num[0] == num[1])
      printf("Yes\n");
    else
      printf("No\n");
  } else
    printf("No\n");
  return 0;
}
