#include <fstream>

using namespace std;

unsigned int N, L, U;
unsigned int a[1100000];

unsigned int maximum, val;
unsigned int i, j, k;

unsigned int sol;

int main ()
{
    ifstream fin ("secv5.in");
    fin >> N >> L >> U;
    for (i=1; i<=N; i++)
        fin >> a[i];
    fin.close();

    maximum = a[1];
    for (i=2; i<=N; i++)
        if (a[i] > maximum)
            maximum = a[i];

    unsigned int b[maximum+1];

    for (i=1; i<=N; i++)
        for (j=i; j<=N; j++)
        {
            val = 0;
            for (k=1; k<=maximum; k++)
                b[k] = 0;
            for (k=i; k<=j; k++)
                b[a[k]]++;
            for (k=1; k<=maximum; k++)
                if (b[k] != 0)
                    val++;
            if (val >= L && val <= U)
                sol++;
        }
    ofstream fout ("secv5.out");
    fout << sol;
    fout.close();
    return 0;
}