gistfile1.txt

#include <iostream>

using namespace std;

int ZnajdzMozliweTrojkaty(int tablica[],int n)
{
 int wynik = 0;
 for (int i = 0 ; i < n; i++){
    for (int j = i++; j<n; j++){
        for(int k = j++; k<n; k++){
            if((tablica[i] + tablica[j]> tablica[k])&&(tablica[i] + tablica[k]> tablica[j])&&(tablica[k] + tablica[j]> tablica[i]))
            wynik++;
            }
    }
 }
 return wynik;
}
int main()
{
    int x,y;
    cin>>x>>y;
    int tablica[10000];
    for(int t=x;t<=y-x;t++)
        tablica[t]++;
    int s = sizeof(tablica[10001]) / sizeof(tablica[0]);
    cout<<ZnajdzMozliweTrojkaty(tablica, s);
    return 0;
}