'use strict'

function main(input) {
  const inputList = input.split('\n');
  const n = parseInt(inputList[0])
  const l = inputList[1].split(' ').map(i => parseInt(i))

  const max = l.reduce((a,b) => a>b ? a : b)
  let sum = 0
  for (let i=0; i<n; i++) {
    sum += l[i]
  }
  sum -= max

  if (max < sum) {
    console.log('Yes')
  } else {
    console.log('No')
  }
 
}

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