"use strict";
process.stdin.resume();
process.stdin.setEncoding("utf8");

let lines = [];
var reader = require("readline").createInterface({
  input: process.stdin,
  output: process.stdout
});

reader.on("line", line => {
  lines.push(line.split(/\s/).map(i => parseInt(i)));
});

reader.on("close", () => {
  let n = lines.shift()[0];
  let l = lines[0];
  let max = Math.max(...l);
  l.splice(l.indexOf(max), 1);
  let sum = l.reduce((a, i) => a + i);
  console.log(max < sum ? "Yes" : "No");
});
