diff --git a/roman-time.js b/roman-time.js
index f66353e..bcff28c 100644
--- a/roman-time.js
+++ b/roman-time.js
@@ -1,12 +1,105 @@
 'use strict';
 
-/**
- * @param {String} time – время в формате HH:MM (например, 09:05)
- * @returns {String} – время римскими цифрами (IX:V)
- */
+var arabicToRomanTable = {
+ 1: 'I',
+ 4: 'IV',
+ 5: 'V',
+ 9: 'IX',
+ 10: 'X',
+ 40: 'XL',
+ 50: 'L'
+};
+
+var orderedArabicNumbers = [50, 40, 10, 9, 5, 4, 1];
+
 function romanTime(time) {
- // Немного авторского кода и замечательной магии
+ var normalizedTime = normalize(time);
+ time = convertTimeToRoman(normalizedTime.hours, orderedArabicNumbers) + ':' +
+ convertTimeToRoman(normalizedTime.minutes, orderedArabicNumbers);
+
 return time;
 }
 
+function determineTheOrder(arabicToConvert, orderedNumbers) {
+ var orderOfRomanDigits = [];
+ var arabicRemain = arabicToConvert;
+ var numberOfDigits;
+ for (var i = 0; i < orderedNumbers.length; i++) { + if (arabicRemain < 0) { + break; + } + numberOfDigits = 0; + var divisionRemain = arabicRemain % orderedNumbers[i]; + if (arabicRemain !== divisionRemain) { + numberOfDigits = (arabicRemain - divisionRemain) / orderedNumbers[i]; + arabicRemain = divisionRemain; + } + + while (numberOfDigits) { + orderOfRomanDigits.push(orderedNumbers[i]); + numberOfDigits--; + } + } + + return orderOfRomanDigits; +} + +function renderResult(orderOfRoman) { + var result = ''; + for (var i = 0; i < orderOfRoman.length; i++) { + result += arabicToRomanTable[orderOfRoman[i]]; + } + + return result; +} + +function convertTimeToRoman(time, orderedNumbers) { + if (time === 0) { + return 'N'; + } + var orderOfDigits = determineTheOrder(time, orderedNumbers); + + return renderResult(orderOfDigits); +} + +function normalize(time) { + var splittedTime; + if (typeof time === 'string' && time.length === 5) { + splittedTime = time.split(':'); + } else { + throw new TypeError('Неверное время'); + } + var hours = filterTimeParts(splittedTime[0]); + var minutes = filterTimeParts(splittedTime[1]); + validate(hours, minutes); + + return { + hours: hours, + minutes: minutes + }; +} + +function validate(hours, minutes) { + if (isNotValid(hours, 0, 23) &#124;&#124; isNotValid(minutes, 0, 59)) { + throw new TypeError('Неверное время'); + } +} + +function isNotValid(value, minValue, maxValue) { + if (isNaN(value) &#124;&#124; value < minValue &#124;&#124; value> maxValue) {
+
+ return true;
+ }
+
+ return false;
+}
+
+function filterTimeParts(value) {
+ if (/^([0-9]{2})$/.test(value)) {
+ return Number(value);
+ }
+
+ return NaN;
+}
+
 module.exports = romanTime;
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/urfu-2016/javascript-task-1/compare/master...frangetta:javascript-task-1:master.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/urfu-2016/javascript-task-1/compare/master...frangetta:javascript-task-1:master.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>