110.js

const identity = v => v
const join = (sep = '\n') => array => array.join(sep)
const split = (sep = ' ') => string => string.split(sep)
const inputs = (file = '/dev/stdin') => {
  const stream = require('fs').readFileSync(file, 'utf-8').trim()
  const toArray = sep => fn => iter => Array.from(split(sep)(iter), fn)
  return {
    readCols: (fn = identity) => toArray(' ')(fn)(stream),
    readRows: (fn = identity) => toArray('\n')(fn)(stream),
    readStream: (fn = identity) => fn(stream),
    readMatrix: (fn = identity) => toArray('\n')(identity)(stream)
      .map(toArray(' ')(fn))
  }
}

const outputs = v => {
  const _print = fn => v => console.log(fn(v))
  return {
    toLine: () => _print(identity)(v),
    toCols: () => _print(join(' '))(v),
    toRows: () => _print(join('\n'))(v),
    toJSON: () => _print(JSON.stringify)(v),
    toMatrix: () => _print(join('\n'))(v.map(join(' ')))
  }
}

// 即時実行関数(main)
(() => {

  // define function
  const fn = (n, p, m, q) => {
    // ここに処理を書く
    const autographsCosts = n * p
    const penCosts = Math.ceil(n / m) * q
    return autographsCosts + penCosts
  }

  // declare varriable
  const [[n, p], [m, q]] = inputs().readMatrix(Number)

  // processing
  const result = fn(n, p, m, q)

  // display
  outputs(result).Line()

})()

data

100 110
20 200