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