atestat_5.cpp

#include <iostream>
#include <fstream>

using namespace std;

// determina suma divizorilor lui x
// neconsiderandu-se numarul in sine
unsigned int suma_div(unsigned int x) {
    unsigned int suma = 1;
    for(unsigned int div = 2; div <= x/2; ++div) {
        if(x%div == 0) {
            suma += div;
        }
    }
    return suma;
}

int main() {
    ifstream fin("numere.txt");

    unsigned int x, y;
    // citesc cat timp in fisier exista numere
    while(fin >> x >> y) {
        // daca (x, y) respecta conditia ceruta le afisez
        if(suma_div(x) == y+1 && suma_div(y) == x+1) {
            cout << x << " " << y << "\n";
        }
    }
}