/**
 * 
 * @param {string} input 
 */
function main(input) {
  const inputList = input.split("\n");
  const n = Number(inputList[0]);
  const l = inputList[1].split(" ");
  let max = 0;
  l.forEach(tmp => {
    if(max < Number(tmp)){
      max = Number(tmp);
    }
  });

  let sum = 0;
  l.forEach(tmp => {
    sum += Number(tmp);
  });

  if(max < (sum-max)){
    console.log("Yes");
  }else{
    console.log("No");
  }
}

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