function main(input) {
  var N=input.split("\n")[0];
  var arrL = input.split('\n')[1].split(' ').map((n) => parseInt(n, 10));
  var sum =  function(arr) {
    var sum = 0;
    for (var i=0,len=arr.length; i<len; ++i) {
        sum += arr[i];
    };
    return sum;
};

const wa = sum(arrL);
 const saidai=Math.max.apply(null, arrL);
  if(saidai<wa-saidai){
    console.log("Yes");
  }else{
    console.log("No");
  }
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));