#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  while (scanf("%d%d%d", &a, &b, &c) != EOF) {
    if (a >= b) {
      if (a > c) {
        if (a == b + c)
          printf("Yes\n");
        else
          printf("No\n");
      } else if (a < c) {
        if (c == a + b)
          printf("Yes\n");
        else
          printf("No\n");
      }
    } else if (a < b) {
      if (b > c) {
        if (b == a + c)
          printf("Yes\n");
        else
          printf("No\n");
      } else if (b < c) {
        if (c == a + b)
          printf("Yes\n");
        else
          printf("No\n");
      }
    }
  }
  return 0;
}
