#include <bits/stdc++.h>
using namespace std;
ifstream fin("secv5.in");
ofstream fout("secv5.out");
int freq[1048578];

long long functie(const vector<int>& a, int K, int N)
{
    if (K<0)
        return 0;
    for (int i=0;i<=N;i++)
        freq[i]=0;
    int distinct=0,l=0;
    long long res=0;
    for (int r=0;r<N;r++)
    {
        if (freq[a[r]]==0)
        distinct++;
        freq[a[r]]++;
        while(distinct>K)
        {
            freq[a[l]]--;
            if (freq[a[l]] == 0)
            {
                distinct--;
            }
            l++;
        }
        res+=(r-l+1);
    }
    return res;
}

int main() {

    int N,L,U;
    fin>>N>>L>>U;

    vector<unsigned int> v(N);
    vector<unsigned int> vf(N);
    for (int i=0;i<N;i++)
    {
        fin>>v[i];
        vf[i]=v[i];
    }

    sort(vf.begin(), vf.end());

    int j=0;

    for (int i=1;i<vf.size();i++)
        if (vf[i]!=vf[j])
        {
            j++;
            vf[j]=vf[i];
        }
    vf.resize(j+1);
    vector<int> a(N);

    for (int i=0;i<N;i++)
    {
    int low=0,high=(int)vf.size()-1;
    int r= -1;

    while (low<=high)
    {
        int mid=low+(high-low)/2;
        if (vf[mid]>=v[i])
        {
            r=mid;
            high=mid-1;
        }
        else
        {
            low=mid+1;
        }
    }
        a[i]=r;
    }

    long long ans=functie(a,U,N)-functie(a,L-1,N);
    fout<<ans<<"\n";
    fin.close();
    fout.close();
    return 0;
}