function Main(input) {
  input = input.split(" ");
  //空白で区切るってことやろ

  var A = parseInt(input[0], 10);
  var B = parseInt(input[1], 10);
  var C = parseInt(input[2], 10);
  var D = "No";
  if( A + B == C ){
    D = "Yes"
  }
  if( B + C == A ){
    D = "Yes";
  }
  if( A + C == B ){
    D = "Yes";
  }
console.log(D);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));