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