#include <iostream>
#include <string>
#include <math.h>

using namespace std;

class Numere {
public:
    int nr1;
    int nr2;
    Numere();
    Numere(int, int);
    void Adunare();
};

Numere::Numere() {
    nr1 = 0;
    nr2 = 0;
}

Numere::Numere(int a, int b) {
    nr1 = a;
    nr2 = b;
}

void Numere::Adunare() {
    cout<<nr1+nr2;
}

void pb1() {
    int a, b;
    cout<<"a = "; cin>>a;
    cout<<"b = "; cin>>b;
    Numere x;
    x.nr1 = a;
    x.nr2 = b;
    x.Adunare();
}

class NumerePerfecte {
public:
    int inf;
    int sup;
    int suma;
    NumerePerfecte();
    NumerePerfecte(int, int);
    void ParcurgereNumere();
    int SumaDivizori(int);
    void AfisareNumar(int);
};

NumerePerfecte::NumerePerfecte() {
    inf = 0;
    sup = 0;
    suma = 0;
}

NumerePerfecte::NumerePerfecte(int a, int b) {
    inf = a;
    sup = b;
}

int NumerePerfecte::SumaDivizori(int x) {
    if (x == 0 || x == 1) {
        return 1;
    }
    int i, suma = 1;
    for (i = 2; i <= x/2; i++) {
        if (x % i == 0) {
            suma+=i;
        }
    }
    return suma;
}

void NumerePerfecte::AfisareNumar(int x) {
    cout<<x<<" ";
}

void NumerePerfecte::ParcurgereNumere() {
    int i;
    for (i = inf; i <= sup; i++) {
        if (NumerePerfecte::SumaDivizori(i) == i) {
            NumerePerfecte::suma += i;
        }
    }
    NumerePerfecte::AfisareNumar(NumerePerfecte::suma);
}

void pb2() {
    int a, b;
    cout<<"Limita inferioara = "; cin>>a;
    cout<<"Limita superioara = "; cin>>b;
    NumerePerfecte x;
    x.inf = min(a, b);
    x.sup = max(a, b);
    x.ParcurgereNumere();

}

typedef struct {
    char forma[50];
    double gem;
    double frisca;
} forme;

class Bunicuta {
protected:
    double pi = 3.1415;
public:
    int contor;
    forme Forme[100];
    Bunicuta();
    void Add(char*, int, int, int);
    void Remove(int);
};

Bunicuta::Bunicuta() {
    contor = 0;
}

void Bunicuta::Remove(int x) {
    for (int i = x; i < contor; i++) {
        Forme[i] = Forme[i+1];
    }
    contor--;
}

void Bunicuta::Add(char forma[50], int v1, int v2, int v3 = 0) {
    double perimetruB = 0, ariaB = 0;
    contor++;
    strcpy(Forme[contor].forma, forma);
    if (strcmp(Forme[contor].forma, "cerc") == 0) {
        perimetruB = 2 * pi * v1;
        ariaB = pi * v1 * v1;
        Forme[contor].gem = ariaB * v2 * 2;
        Forme[contor].frisca = perimetruB * v2;
    } else if (strcmp(Forme[contor].forma, "dreptunghi") == 0) {
        perimetruB = 2*(v1 + v2);
        ariaB = v1 * v2;
        Forme[contor].gem = ariaB * v3 * 2;
        Forme[contor].frisca = perimetruB * v3;
    } else if (strcmp(Forme[contor].forma, "patrat") == 0) {
        perimetruB = 4*v1;
        ariaB = v1 * v1;
        Forme[contor].gem = ariaB * v2 * 2;
        Forme[contor].frisca = perimetruB * v2;
    } else if (strcmp(Forme[contor].forma, "triunghi") == 0) {
        double ipotenuza = sqrt(v1*v1 + v2*v2);
        perimetruB = (double) v1 + v2 + ipotenuza;
        ariaB = (double) v1*v2/2;
        Forme[contor].gem = ariaB * v3 * 2;
        Forme[contor].frisca = perimetruB * v3;
    }
    cout<<Forme[contor].gem<<" "<<Forme[contor].frisca<<"\n";
}

void pb3() {
    Bunicuta x;
    char opt[10];
    char forma[50];
    cout<<"Optiunea ta (ADD/REMOVE/STOP): ";
//    cin.get(opt, 10);
//    cin.get();]
//    cin>>opt;
    while (strcmp(opt, "STOP") != 0) {
        cout<<"Optiunea ta (ADD/REMOVE/STOP): ";
//        cin.get(opt, 10);
//        cin.get();
        cin>>opt;
        if (strcmp(opt, "ADD") == 0) {
            cout<<"Citeste forma (cerc, dreptunghi, patrat, triunghi): ";
//            cin.get(forma, 50);
            cin>>forma;
            if (strcmp(forma, "cerc") == 0) {
                int raza, inaltime;
                cout<<"Citeste raza: ";
                cin>>raza;
                cout<<"Citeste inaltimea: ";
                cin>>inaltime;
                x.Add(forma, raza, inaltime);
            } else if (strcmp(forma, "dreptunghi") == 0) {
                int l, L, inaltime;
                cout<<"Citeste latimea: "; cin>>l;
                cout<<"Citeste lungimea: "; cin>>L;
                cout<<"Citeste inaltimea: "; cin>>inaltime;
                x.Add(forma, l, L, inaltime);
            } else if (strcmp(forma, "patrat") == 0) {
                int l, inaltime;
                cout<<"Citeste latura: "; cin>>l;
                cout<<"Citeste inaltimea: "; cin>>inaltime;
                x.Add(forma, l, inaltime);
            } else if (strcmp(forma, "triunghi") == 0) {
                int c1, c2, inaltime;
                cout<<"Citeste cateta mica: "; cin>>c1;
                cout<<"Citeste cateta mare: "; cin>>c2;
                cout<<"Citeste inaltimea: "; cin>>inaltime;
                x.Add(forma, c1, c2, inaltime);
            }
        } else if (strcmp(opt, "REMOVE") == 0) {
            int el;
            cout<<"Elementul care va fi sters: "; cin>>el;
            x.Remove(el);
        }
    }
    double total_gem = 0, total_frisca = 0;
    for (int i = 1; i <= x.contor; i++) {
        total_gem += x.Forme[i].gem;
        total_frisca += x.Forme[i].frisca;
    }
    cout<<"Total gem: "<<total_gem<<"\nTotal frisca: "<<total_frisca;
}

int main() {
    int option = 1;
    while (option) {
        cout<<"0. Opreste\n1. Problema 1\n2. Problema 2\n3. Problema 3\n";
        cout<<"Optiunea ta: ";
        cin>>option;
        switch(option) {
            case 1: {
                pb1();
                break;
            }
            case 2: {
                pb2();
                break;
            }
            case 3: {
                pb3();
                break;
            }
            default: break;
        }
        cout<<"\n";
    }
    return 0;
}