PasswordGenerator

#include <iostream>
#include <string>
#include <cctype>

using namespace std;

                               // PasswordGenerator
int main()
{
    int carry = 0;
    int a, b, c, d, e, f, n;
    string s;
    char ch;
    getline(cin, s);
    a = stoi(s);
    getline(cin, s);
    ch = toupper(s[0]);
    b = ch - 'A' + 1;
    getline(cin, s);
    ch = tolower(s[0]);
    c = ch - 'a' + 1;
    cin >> d >> e >> f >> n;
    int f1 = n % f + carry;
    if (f1 == 0)
    {
        f1 = f;
        carry = 0;
    }
    else carry = 1;
    n = n / f;
    if (n == 0)
    {
        cout << "1Aa11" << f1 << endl;
        return 0;
    }
    int e1 = n % e + carry;
    if (e1 == 0)
    {
        e1 = e;
        carry = 0;
    }
    else
    {
        carry = 1;
    }
    n = n / e;
    if (n == 0)
    {
        cout << "1Aa1" << e1 << f1 << endl;
        return 0;
    }
    int d1 = n % d + carry;
    if (d1 == 0)
    {
        d1 = d;
        carry = 0;
    }
    else
    {
        carry = 1;
    }
    n = n / d;
    if (n == 0)
    {
        cout << "1Aa" << d1 << e1 << f1 << endl;
        return 0;
    }
    int c1 = n % c + carry;
    if (c1 == 0)
    {
        c1 = c;
        carry = 0;
    }
    else
    {
        carry = 1;
    }
    n = n / c;
    if (n == 0)
    {
        cout << "1A" << (char)('a' + c1 - 1) << d1 << e1 << f1 << endl;
        return 0;
    }
    int b1 = n % b + carry;
    if (b1 == 0)
    {
        b1 = b;
        carry = 0;
    }
    else
    {
        carry = 1;
    }
    n = n / b;
    if (n == 0)
    {
        cout << "1" << (char)('A' + b1 - 1) << (char)('a' + c1 - 1) << d1 << e1 << f1 << endl;
        return 0;
    }
    if (n > a)
    {
        cout << "No password on this position" << endl;
        return 0;
    }
    if (n == a)
    {
        if (carry == 1)
        {
            cout << "No password on this position" << endl;
            return 0;
        }
    }
    cout << n + carry << (char)('A' + b1 - 1) << (char)('a' + c1 - 1) << d1 << e1 << f1 << endl;
    return 0;
}