bucuresti iulie2015

#include<iostream>
#include<fstream>
using namespace std;
void citire(int &a, int &b, int &c, int &n,int x[])
{
    cout << "a="; cin >> a;
    cout << "b="; cin >> b;
    cout << "c="; cin >> c;
    cout << "n="; cin >> n;
    cout << "dati numerele din secventa s:";
    for (int i = 0; i < n; i++)
        cin >> x[i];
}
int rezEcuatie(int a, int b, int x, int y)
{
    return x*x*a + y*y*b;
}
void perechi(int v[], int n, int a, int b, int c)
{
    int i = 0;
    while (i < n)
    {
        int j = i+1;
        while (j < n)
        {
            if (rezEcuatie(a, b, v[i], v[j])==c)
                cout << "(" << v[i] << "," << v[j] << ")";
            if (rezEcuatie(a, b, v[j], v[i])==c)
                cout << "(" << v[j] << "," << v[i] << ")";
            j++;
        }
        i++;
    }
}
void perechiEficientCresc(int v[], int n, int a, int b, int c,int &count)
{
    int i = 0;
    count = 0;
    while (i < n && v[i]*v[i]*a<=c || v[i]*v[i]*b<=c)
    {
        int j = i+1;
        while (j < n && rezEcuatie(a,b,v[i],v[j]) <= c && v[i]*v[i]*b<=c-v[j]*v[j]*a && v[j]*v[j]*b<=c-v[i]*v[i]*a)
        {

            if (rezEcuatie(a, b, v[i], v[j]) == c)
                count++;
            if (rezEcuatie(a, b, v[j], v[i]) == c)
                    count++;
            j++;
        }
        i++;
    }


}
int main()
{
    int x[50], a, b, c, n,count;
    citire(a, b, c, n, x);
    //perechi(x, n, a, b, c);
    perechiEficientCresc(x, n, a, b, c,count);
    cout << "sunt " << count << " perechi cu proprietatea ceruta";
    cout << endl << endl;
    system("pause");
    return 0;
}