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