"use strict";
function main(input) {
  const inputs = input.split("\n").filter(x => x !== "");

  const N = Number(inputs[0]);
  const L = inputs[1].split(" ").map(Number);

  let sL = L.sort((a,b) => a-b);
  let maxL = sL[sL.length - 1];
  let sumL = sL.reduce((acc, cur) => acc + cur);

  // console.log({sL,maxL, sumL})
  console.log(maxL < (sumL - maxL) ? "Yes":"No");

}

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