[АВ 7.3] Тајни пораки

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

class Secret
{
public:
    virtual double simpleEntropy() = 0;
    virtual int total() = 0;
};

class DigitSecret : public Secret
{
private:
    int di[100];
    int n;
public:
    DigitSecret(int *d, int nn)
    {
        for(int i = 0; i < n; ++i)
            di[i] = d[i];
        n = nn;
    }

    int total()
    {
        return n;
    }

    double simpleEntropy()  {
        double different = 0.0;
        int count = 0;

        for (int i = 0;i < n; i++){
            count = 0;
            for (int j = 0;j < n; j++){
                if ((i != j) && (di[i] == di[j]))
                    count++;
            }
            if (count==0)
                different+=1.0;
        }

        return different/total();
    }

    friend ostream &operator << (ostream &o,  DigitSecret &ds){
        for (int i = 0 ; i < ds.total(); i++)
            o << ds.di[i];
        o <<" Simple entropy: " << ds.simpleEntropy() << " Total: "<< ds.total();
        return o;
    }


};

bool operator ==( Secret &s1,  Secret &s2){
        return s1.total() == s2.total() && s1.simpleEntropy() == s2.simpleEntropy();
}

bool operator != ( Secret &s1,  Secret &s2){
        return s1.total() != s2.total() || s1.simpleEntropy() != s2.simpleEntropy();
}

class CharSecret : public Secret
{
private:
    char ch[100];
    int n;
public:
    CharSecret(char *c)
    {
        for(int i = 0; i < strlen(ch) ; i++)
            ch[i] = c[i];
        n = strlen(ch);
    }
int total()
        {
            return n;
        }
    double simpleEntropy() {
        double different = 0.0;
        int count = 0;

        for (int i = 0;i < n; i++){
            count = 0;
            for (int j = 0; j < n; j++){
                if ((i!=j) && (ch[i] == ch[j]))
                    count++;
            }
            if (count == 0)
                different += 1.0;

        }
        return different/total();
    }

    friend ostream &operator << (ostream &o,  CharSecret &cs){
        for (int i = 0; i < cs.total(); i++)
            o << cs.ch[i];
        o<<" Simple entropy: " << cs.simpleEntropy() << " Total: "<< cs.total();
        return o;
    }

};

void process(Secret **secrets, int nn)
{
    int max = 0;
    int j = 0;
    for(int i = 0; i < nn; i++)
    {
        if(secrets[i] ->simpleEntropy() > max)
            {
                max = secrets[i] ->simpleEntropy();
            j = i;
            }
    }

    DigitSecret *ds = dynamic_cast <DigitSecret *>(secrets[j]);
    if(ds != 0)
        cout << *ds;

    CharSecret *cs = dynamic_cast <CharSecret *>(secrets[j]);
    if(cs != 0)
        cout << *cs;
}

void printAll(Secret **secrets, int n)
{
    for(int i = 0; i < n; i++)
    {
        DigitSecret *ds = dynamic_cast<DigitSecret*>(secrets[i]);
        if(ds != 0)
            cout << *ds << endl;
        CharSecret *cs = dynamic_cast <CharSecret *>(secrets[i]);
        if(cs != 0)
            cout << *cs;
    }
}
int main() {
    int n;
    cin >> n;
    if(n == 0) {
        cout << "Constructors" << endl;
        int numbers [] = {1,2,3,4,5};
        DigitSecret ds(numbers,5);
        CharSecret cs("abcabc");
        cout << "OK" << endl;
    } else if(n == 1) {
        cout << "operator <<" << endl;
        int numbers [] = {1,2,3,4,5};
        DigitSecret ds(numbers,5);
        CharSecret cs("abcabc");
        cout << ds << endl;
        cout << cs << endl;
    }  else if(n == 2) {
        cout << "== and !=" << endl;
        int numbers [] = {1,2,3,4,5};
        DigitSecret ds(numbers,5);
        CharSecret cs("abcabc");
        CharSecret css("abcabc");
        cout << (ds == cs) << endl;
        cout << (cs != ds) << endl;
        cout << (cs == css) << endl;
        cout << (cs != css) << endl;
    } else if(n == 3) {
        cout << "Secret processor" << endl;
        int numbers1 [] = {1,2,3,4,5,6,4,3,2,1,1,2,3,4,5};
        DigitSecret ds1(numbers1,15);
        int numbers2 [] = {1,2,3,4,5,0,0,0,5,5,4,4,3,3,2};
        DigitSecret ds2(numbers2,15);
        int numbers3 [] = {1,0,9,4,3,8,4,0,9,3,1,4,3,2,1,4,4,3,7,2};
        DigitSecret ds3(numbers3,20);
        CharSecret cs1("fhdaieowujkfjdsafjdsakjhueiqoyroq");
        CharSecret cs2("nvzcfsadrqipqhfjdfncxoqw");
        CharSecret cs3("uyoihfdsanmqeqrzvdhfeqyrq");
        Secret** s = new Secret*[6];
        s[0] = &ds1;
        s[1] = &ds2;
        s[2] = &ds3;
        s[3] = &cs1;
        s[4] = &cs2;
        s[5] = &cs3;
        process(s,6);
        delete [] s;
    }
    else if (n==4){
        cout << "Print all secrets" << endl;
        int numbers1 [] = {1,2,3,4,5,5,4,3,2,1,1,2,3,4,5};
        DigitSecret ds1(numbers1,15);
        int numbers2 [] = {1,2,3,4,5,0,0,0,5,5,4,4,3,3,2};
        DigitSecret ds2(numbers2,15);
        int numbers3 [] = {1,0,9,4,3,8,4,0,9,3,1,4,3,2,1,4,4,3,7,2};
        DigitSecret ds3(numbers3,20);
        CharSecret cs1("fhdaieowujkfjdsafjdsakjhueiqoyroq");
        CharSecret cs2("nvzcfsadrqipqhfjdfncxoqw");
        CharSecret cs3("uyoihfdsanmqeqrzvdhfeqyrq");
        Secret** s = new Secret*[6];
        s[0] = &ds1;
        s[1] = &ds2;
        s[2] = &ds3;
        s[3] = &cs1;
        s[4] = &cs2;
        s[5] = &cs3;
        printAll(s,6);
        delete [] s;
    }

    return 0;
}