typedef struct
{
  char name[10];
  int vip;
  int vuz;
  float pr;
} school;

void IndexSort(school arr[], int n, int *B)
{
   int i,j,t = 0;
   for(i = 0; i < n; i++)
    {
        B[i] = i;
    }
for (i = n-2; i>=0; --i)
    {
        for (j = n-1; j>0; --j)
        {
            if (arr[i].pr < arr[j].pr)
            {
                t=B[i];
                B[i]=B[j];
                B[j]=t;
            }
        }
    }
}

int main()
{
   int i, j, t, n;
   int B[n];
   school S;

cout << "Input amount of schools: ";
cin >> n;
cout << endl;

school* arr = new school[n];

for (i = 0; i < n; i++)
{
    cout << "Input school name: ";
    cin >> arr[i].name;
    cout << "Input amount of graduate school:";
    cin >> arr[i].vip;
    cout << "Input amount of already students:";
    cin >> arr[i].vuz;
    if (arr[i].vip < arr[i].vuz)
        {
            cout << "You did mistake, try again " << endl;
            break;
    }
}

for(i = 0; i < n; i++)
{
    S.pr = ((float)S.vip/(float)S.vuz)*100;
    arr[i] = S;
}

IndexSort(arr, n, B);

for (i = 0; i < n; i++)
    cout << arr[i].name << "  " << arr[i].vip << "  " << arr[i].vuz << "  ";

 return 0;
}