diff --git a/roman-time.js b/roman-time.js
index f66353e..58137a0 100644
--- a/roman-time.js
+++ b/roman-time.js
@@ -1,11 +1,78 @@
-'use strict';
+"use strict";
 
 /**
  * @param {String} time – время в формате HH:MM (например, 09:05)
  * @returns {String} – время римскими цифрами (IX:V)
  */
+var arabic = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60];
+var roman = ["N", "I", "II", "III", "IV", "V", "VI", "VII", "VIII",
+        "IX", "X", "XX", "XXX", "XL", "L", "LX"];
+
+var romanHour = "";
+var romanMinute = "";
+var romanNumber = "";
+
+function isCorrectCount(hour, minute) {
+    if (hour.length > 2 || minute.length > 2) {
+        return false;
+    }
+
+    return true;
+}
+
+function isCorrectHour(hour) {
+    if (hour > 23 || hour < 0 || typeof hour === "None") {
+        return false;
+    }
+
+    return true;
+}
+
+function isCorrectMinute(minute) {
+    if (minute > 59 || minute < 0 || typeof minute === "None") {
+        return false;
+    }
+
+    return true;
+}
+
+// jshint maxdepth:5
+function translate(number) {
+    var i = 0;
+    if (number === 0) {
+        romanNumber += "N";
+
+        return romanNumber;
+    }
+
+    for (i = 0; i < arabic.length; i += 1) {
+        if (number < arabic[i]) {
+            number -= arabic[i - 1];
+            romanNumber += roman[i - 1];
+            if (number !== 0) {
+                i = 0;
+                translate(number);
+            }
+
+            return romanNumber;
+        }
+    }
+}
+
 function romanTime(time) {
     // Немного авторского кода и замечательной магии
+    var hour = parseInt(time.split(":")[0], 10);
+    var minute = parseInt(time.split(":")[1], 10);
+    if (isCorrectMinute(minute) && isCorrectCount(hour, minute) && isCorrectHour(hour)) {
+        romanHour = translate(hour);
+        romanNumber = "";
+        romanMinute = translate(minute);
+        romanNumber = "";
+        time = romanHour + ":" + romanMinute;
+    } else {
+        throw new TypeError("Неверное время");
+    }
+
     return time;
 }