function main(input) {
  var nums = input[1].split(" ").map(v=>{
    return v-0;
  });
  nums.sort((a,b)=>a-b);
  var sum = 0;
  nums.forEach(v=>sum+=v);
  sum-=nums[nums.length-1];
  console.log(sum>nums[nums.length-1]?"Yes":"No");

}

main(require('fs').readFileSync('/dev/stdin', 'utf8').trim().split("\n"))
