06. Group Name

//URL FOR THE TASK: https://judge.softuni.bg/Contests/Practice/Index/715#5

#include <iostream>
#include <string>
using namespace std;

int main() {

    char capital_letter;
    char first_little;
    char second_little;
    char third_little;
    int number;
    cin >> capital_letter >> first_little
    >> second_little >> third_little >> number;

    int counter = 0;
    for (char i = 'A'; i <= capital_letter; ++i)
    {
        for (char j = 'a'; j <= first_little; ++j)
        {
            for (char k = 'a'; k <= second_little; ++k)
            {
                for (char l = 'a'; l <= third_little; ++l)
                {
                    for (int m = 0; m <= number; ++m)
                    {
                        counter++;
                    }
                }
            }
        }
    }
    cout << counter - 1<< endl;
    return 0;
}