function main(a){
	a = a.split(" ");
	a=stn(a);
	if(a[0]+a[1]==a[2]||a[1]+a[2]==a[0]||a[0]+a[2]==a[1]){
		op("Yes");
	}else{
		op("No");
	}
}
function op(a){
	console.log(a);
}
function stn(a){
		return a.map(function(x){return parseInt(x,10);});
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));