#include <bits/stdc++.h>
int main() {
  long long int a, b, c = 0, d = 0, w = 0, i, str1 = 0, str2 = 0, flag, j,
                      count = 0, k, n, sum = 0;
  char s[101][101];
  scanf("%lld%lld%lld", &a, &b, &c);
  if ((a + b == c || b + c == a || a + c == b) && a != 0 && b != 0 && c != 0) {
    printf("Yes");
  } else {
    printf("NO");
  }
  return 0;
}
