package com.ex3ndr.romanian

fun getValue(symbol: Char):Int
{
  return when(symbol)
  {
    'I' -> 1
    'V' -> 5
    'X' -> 10
    'L' -> 50
    'C' -> 100
    'D' -> 500
    'M' -> 1000
  }
}

fun main(args : Array<String>) {
  if (args.size != 1)
  {
    System.out?.println("Usage: <data>")
    return
  }

  val data = args.get(0);
  System.out?.println("Input: ${data}")
  var res = 0
  var lastValue = 0;
  for(i in 0..data.length-1)
  {
    val j = data.length-1 - i;
    val currentValue = getValue(data[j])
    if (currentValue >= lastValue)
      res += currentValue
    else
      res -= currentValue

    lastValue = currentValue
  }
  System.out?.println("Output: ${res}")
}