#include <iostream>
#include <algorithm>
#include <string> 
#include <vector>
#include <iomanip>
using namespace std;

int main()
{
	int a, b, c;
	cin >> a >> b >> c;
	if (a + b + c - max(a, b, c) * 2 == 0) {
		cout << "Yes" << endl;
	}
	else {
		cout << "No" << endl;
	}
	return 0;
}