#include <fstream>
using namespace std;

ifstream cin("secv5.in");
ofstream cout("secv5.out");

int arr[1048577], cnt[1048577];
bool aparut[4294967297];

int main()
{
    int n, l, u, max = 0, cntSecv = 0;
    cin >> n >> l >> u;
    cnt[0] = 0;
    for (int i = 1; i <= n; i++)
    {
        cnt[i] = cnt[i - 1];
        cin >> arr[i];
        if (aparut[arr[i]] == false)
        {
            cnt[i]++;
            aparut[arr[i]] = true;
        }
        //cout << cnt[i] << "\n";
    }
    for (int i = 1; i <= n; i++)
    {
        int ci = i + 1;
        if (l <= cnt[i] && cnt[i] <= u)
        {
            while (ci <= n && cnt[ci] == cnt[i])
            {
                ci++;
            }
            cntSecv += ci - i + 1;
        }

    }
    cout << cntSecv + 1;
}