#include <bits/stdc++.h>  // g++ -std=c++14 -o a a.cpp

int main() {
   int a, b, c;
   cin >> a >> b >> c;
   if (a + c == b ||
       a + b == c ||
       b + c == a ) {
    cout << "Yes" << endl;
   } else {
    cout << "No" << endl;
   }
}