#include <iostream>

using namespace std;

/*
1. Adunati 2 numere.
2. Verificati daca numarul x este par (alegi tu x-ul).
3. Atata timp cat numerele dintr-un sir sunt pare (de la 1 la 20), afisati pe ecran PULENTIU. (NU TOATE TREBUIE SA FIE PARE)
4. Afisati dublul numerelor naturale dintr-un sir (de la 1 la 20)
*/

int a, b, suma = 0 ;

int x;

int main()
{
    cout << "PROBLEMA 1." << endl;
    cin >> a >> b;
    suma = a + b;
    cout << "PROBLEMA 1: " << "suma = " << suma << endl << endl;

    cout << "PROBLEMA 2." << endl;
    cin >> x;
    if(x % 2 == 0)
        cout << "PROBLEMA 2: " << x << " este PAR!" << endl << endl;
    else
        cout << "PROBLEMA 2: " << x << " NU este par..." << endl << endl;

    cout << "PROBLEMA 3." << endl;
    for(int i = 1; i <= 20; i++)
        if(i % 2 == 0)
            cout << "PULENTIU" << endl;

    cout << endl << endl;
    cout << "PROBLEMA 4." << endl;
    int j = 1;
    while(j <= 20)
    {
        cout << j * 2 << " ";
        j++;
    }
}