import * as fs from "fs";
 
let input = (fs.readFileSync("/dev/stdin", "utf8") as string).split("\n");
var bags = input[0].split(" ").map(x => parseInt(x));
var a = bags[0]
var b = bags[1]
var c = bags[2]
var result = "No"

if (a == b + c && b == c + a && c == a + b) { 
result = "Yes"
};

console.log(result);

