// inputに入力データ全体が入る
function Main(input) {
	input = input.split(" ");
	const map1 = input.map(n => parseInt(n, 10));
  	map1.sort(function(a,b){
        if( a < b ) return -1;
        if( a > b ) return 1;
        return 0;
	});
  	if (map1[0] + map1[1] === map1[2] ) {
      console.log("Yes");
    } else {
      console.log("No");
    }
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));