Multiplication in memory leearning

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <time.h>
#include <math.h>
#include <windows.h>
#include <string>

using namespace std;

unsigned long long beg, ended, diff;                        // DEKLARACJA ZMIENNYCH===============================================
string najw[37];
int btime[37];
int q=1,i;


unsigned long long Losuj(int trudP, int trudK, int pot);    // DEKLARACJA FUNKCJI============================================================

int Konmin(int sekundy);

int Konsec(int sekundy);

int IsBest(int time, int dlug, int tryb, int poz);

void Read();

void Start();

void Stop();

int main()                                                  // MAIN============MAIN=================================================
{
    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleTextAttribute(hConsole, 14);

    int poz, tlp, tlk, tryb;                             // DEKLARACJA ZMIENNYCH===============================================
    unsigned long long wynik, odp, a, b;
    bool trwa;



/*
   for (int q = 1; q <= 35; q++)
    {
        cout<<najw[q]<<endl;
    }*/

    srand(time(NULL));

    while(1){



            trwa = true;

    cout<<"Wybierz tryb: "<<endl<<"1. Potegowanie"<<endl<<"2. Mnozenie"<<endl;
    cin>>tryb;

  //   Read();

     cout<<"Wybierz ilosc cyfr (1-5): "<<endl;
    cin>>i;

    Read();

    cout<<"Wybierz poziom trydnosci od 1 do 3"<<endl;
    cin>>poz;

    switch(poz)
           {

           case 1:

               tlp = 5;
               tlk = 1;
            break;

           case 2:
               tlp = 4;
               tlk = 3;
            break;

           case 3:
               tlp = 4;
               tlk = 6;
            break;

            default:
               cout<<"Nie ma takiej opcji!"<<endl;
               break;
           }

        a = Losuj(tlp, tlk, i);

        wynik = a * a;
        b=a;


        if (tryb == 2)
        {
            b = Losuj(tlp, tlk, i);
            wynik = a * b;
        }

     cout<<a<<" X "<<b<<" = ";
     Start();
     while(trwa)
    {
     cin>>odp;
     if(odp == wynik)
     {
         Stop();
         trwa=false;
         IsBest(diff, i, tryb, poz);
     }
     else
     {
         cout<<"ZLE!"<<endl;
     }

    }

    }
    return 0;
}



int Konsec(int sekundy)                         CIALA FUNKCJI======================================================================
{
    return  sekundy - 60 * (sekundy/60);
}

int Konmin(int sekundy)
{
    return sekundy/60;
}

unsigned long long Losuj(int trudP, int trudK, int pot)
{
    unsigned long long toret = 0, ilecyfr;
    pot--;
    for(pot; pot>0; pot)
    {
        ilecyfr = pow(10, pot);

        if ( ilecyfr%2 != 0)
           ilecyfr++;

    toret = toret + (rand()%trudP + trudK) * ilecyfr;
    pot--;
    }

    toret = toret + rand()%trudP + trudK;

    return toret;
}

void Read()
{

    ifstream score("score.txt");
    if (score.is_open())
    {
        q=1;
        while( getline (score,najw[q]))
        {
          //  cout<<najw[q]<<endl;
            if(q<=35)
            q++;
        }
        score.close();
    }
    else
    {
        cout<<"error"<<endl;
    }

     for (int u=1; u<37; u)
     {
         btime[u] = atoi(najw[u].c_str());
         u++;

     }

}

int IsBest(int time, int dlug, int tryb, int poz)
{
    switch (poz)
    {
    case 2:
        dlug=dlug+5;
        break;

    case 3:
        dlug=dlug+10;
        break;
    }

    if (tryb == 2)
        dlug = dlug + 15;


    if(time<btime[dlug])
    {
        cout<<"POBILES REKORD!"<<endl;
        if(btime[dlug]!= 10000)
        {
        cout<<"Poprzedni rekord wynosil "<<Konmin(btime[dlug])<<" min "<<Konsec(btime[dlug])<<" s"<<endl<<endl;
        }
        btime[dlug] = time;

        ofstream dozapisu ("score.txt");
        if (dozapisu.is_open())
        {
            for (int q = 1; q <= 35; q++)
            {
                dozapisu << btime[q]<<endl;
            }
        }
        else cout << "Unable to open file";

        dozapisu.close();

    }
}

void Start()
{
   // cout<<"START!!"<<endl;
    beg = time(NULL);
}

void Stop()
{
    cout<<endl<<"Udalo ci sie!"<<endl;
    ended = time(NULL);
    diff = ended - beg;
    cout<<"Twoj czas wynosi: "<<Konmin(diff)<<" minut i "<<Konsec(diff)<<" sekund(y)!"<<endl<<endl;


}