JSFiddle - React, Tailwind, and code Playground

JavaScript

let input = [
  '4',
  '23',
  '43',
  '31',
];


let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);


let n = +gets();
let numbersArray = [];


for (let i = 1; i < n; i++) {
      numbersArray.push(+gets());
}
      if (1 <= n <= 20 && -200 <= numbersArray <= 200) {
   let largest = Math.max.apply(0, numbersArray)
   print(largest);
}