using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string answerKeyString = "BEDEEEACDEDDEEDBBAAD";

        IDictionary<int, string> studentAnswers = new Dictionary<int, string>()

        {

            {2956, "EBCDEEADDCCXBBAXXDBC"},

            {1957, "BBAEECAXCCEXEAADADDB"},

            {3309, "EACECXBDBEEXDBAEBBAX"},

            {9573, "DEECBABEDAEEAXDEBXDA"},

            {4677, "AXCEDCXEACDDXECCCEDC"},

            {9274, "EXECXEXEXCBCAXADDBBB"},

            {3746, "XBBAEDBCXCEDCEDXXXXA"},

            {1966, "EXCEBBBEDXXXAXDXXBXE"},

            {9922, "XXCXACEBACXAAXXEDEDB"},

            {2222, "DBDAXBXECACBDAEDBBXD"},

        };

        int correct = 0;

        foreach(KeyValuePair<int, string> studentAnswer in studentAnswers)

        {

            for(int i = 0; i < answerKeyString.Length; i++)

            {

                if (studentAnswer.Value[i] == answerKeyString[i])

                {

                    correct += 4;

                }

                else

                {

                    correct -= 1;

                }

            }

            Console.WriteLine("{0}:{1}", studentAnswer.Key, correct);

        }

    }

}