'use strict';

var hasN = false;
// p1: 2D split
// p2: space split
// p3: line split
function main(p1, p2, p3, so) {
  if (p3[0] == 1) console.log("Hello World");else {
    console.log(Number(p3[1]) + Number(p3[2]));
  }
}
function common(a) {
  var line = a.split('\n').slice(0, a.split('\n').length - 1);
  var p2 = line[0].split(' ');
  if (hasN) line = line.slice(1);
  var p1 = line.map(function (e) {
    return e.split(' ');
  });
  main(p1, p2, line, a);
}
common(require("fs").readFileSync("/dev/stdin", "utf8"));
