This is the fragment of my program:
scanf("%d", &n);
for (int i = 0; i < n; i++)
{
    int p;
    scanf("%d", &p);
    p--;
    if (p >= n)
        throw;

If I remove throw, I'll have WA 3.

So children can say absolutely incorrect information?

No, all tests are correct.
There is some bug in your code, it is reason of WA/RT 3