[백준] 1546 Node.js

const fs = require('fs');
const [n, ...arr] = fs.readFileSync("/dev/stdin").toString().trim().split(/\s/);

const scores = arr.map(Number)
const MAX = Math.max(...scores)

let avg = 0;
scores.forEach((s, i) => {
 scores[i] = (s/MAX)*100
 avg += scores[i];   
})

console.log(avg/Number(n))