int *dane(int n){
        int index1;
        int index2;
        int tmp;
        int *tab=new int[n];
        for(int i=0;i<n;i++)    tab[i]=i;
        for(int i=0;i<n*10;i++){
                index1=rand()%n;
                index2=rand()%n;
                tmp=tab[index1];
                tab[index1]=tab[index2];
                tab[index2]=tmp;
        }
        return tab;
}

void dane_delete(int *tab,int n){
        delete []tab;
        return;
}