[백준/Node.js] 시험 감독 #13458

var fs = require('fs');
var input = fs.readFileSync('/dev/stdin').toString().split('\n');

const solution = (N, classInfo, B, C) => {
  let directorNums = 0;
  classInfo.forEach((numOfStudent) => {
    directorNums++;
    numOfStudent -= B;
    if (numOfStudent > 0) directorNums += Math.ceil(numOfStudent / C);
  });

  return directorNums;
};

const N = Number(input[0]);
const classInfo = input[1].split(' ').map((v) => Number(v));
const [B, C] = input[2].split(' ').map((v) => Number(v));
console.log(solution(N, classInfo, B, C));