using System.Collections.Generic;
private static Dictionary<char, int> ToNumber = new Dictionary<char, int>(){
private static Dictionary<int, string> ToRoman = new Dictionary<int, string>(){
private static int ToNum(string roman){
for(int i = 0; i<roman.Length; i++){
if(i+1 <roman.Length && ToNumber[roman[i]] < ToNumber[roman[i+1]]){
number-= ToNumber[roman[i]];
number+=ToNumber[roman[i]];
private static string ToRomanNum(int num){
StringBuilder roman = new StringBuilder();
foreach(var item in ToRoman){
roman.Append(item.Value);
public static void Main()
Console.WriteLine(ToNum("XIV"));
Console.WriteLine(ToRomanNum(1250));