#include <fstream>
#include <map>

using namespace std;
ifstream cin("secv5.in");
ofstream cout("secv5.out");
long long v[1100005];
map <long long, long long> mp;
int main()
{
    long long n, l, u, val, cnt;
    cin >> n >> l >> u;
    for(long long i = 0; i < n; i++){
        cin >> v[i];
    }
    val = cnt = 0;
    for(long long i = 0; i < n; i++){
        mp.clear();
        val = 0;
        for(int j = i; j < n; j++){
            mp[v[j]]++;
            if(mp[v[j]] == 1){
                val++;
            }
            if(l <= val  &&  val <= u){
                cnt++;
            }else if(val > u){
                break;
            }
        }
    }
    cout << cnt;
    return 0;
}